From fcf3324dea52b72706f1877cac113f6cb1adf78b Mon Sep 17 00:00:00 2001
From: Anakaren Rojas <anakaren@khanacademy.org>
Date: Tue, 14 Jan 2025 15:35:56 -0800
Subject: [PATCH 01/10] update x coordinate to include pi readings

---
 .../interactive-graphs/graphs/sinusoid.tsx       | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/packages/perseus/src/widgets/interactive-graphs/graphs/sinusoid.tsx b/packages/perseus/src/widgets/interactive-graphs/graphs/sinusoid.tsx
index 8484ba7239..5ca44215eb 100644
--- a/packages/perseus/src/widgets/interactive-graphs/graphs/sinusoid.tsx
+++ b/packages/perseus/src/widgets/interactive-graphs/graphs/sinusoid.tsx
@@ -67,9 +67,21 @@ function SinusoidGraph(props: SinusoidGraphProps) {
         index: number,
         coordinate: vec.Vector2,
     ): string {
+        const x = coordinate[0];
+        const y = coordinate[1];
+
+        const convertedXCoordinate =
+            x === 0
+                ? `0`
+                : x % 2 === 0
+                  ? `${x / 2} pi`
+                  : x % 1 === 0
+                    ? `${x}/2 pi`
+                    : `${x * 2}/4 pi`;
+
         const coordsObj = {
-            x: srFormatNumber(coordinate[0], locale),
-            y: srFormatNumber(coordinate[1], locale),
+            x: convertedXCoordinate,
+            y: srFormatNumber(y, locale),
         };
 
         return index === 1

From 040aa5807ddada9ad01a35a36b5813f3d27defdf Mon Sep 17 00:00:00 2001
From: Anakaren Rojas <anakaren@khanacademy.org>
Date: Wed, 15 Jan 2025 10:33:33 -0800
Subject: [PATCH 02/10] update snapshots

---
 .../__snapshots__/explanation.test.ts.snap           |  8 ++++----
 .../__snapshots__/graded-group-set-jipt.test.ts.snap | 12 ++++++------
 .../__snapshots__/graded-group-set.test.ts.snap      |  4 ++--
 .../__snapshots__/graded-group.test.ts.snap          |  4 ++--
 4 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/packages/perseus/src/widgets/explanation/__snapshots__/explanation.test.ts.snap b/packages/perseus/src/widgets/explanation/__snapshots__/explanation.test.ts.snap
index e96e0672b6..3383f7cfa0 100644
--- a/packages/perseus/src/widgets/explanation/__snapshots__/explanation.test.ts.snap
+++ b/packages/perseus/src/widgets/explanation/__snapshots__/explanation.test.ts.snap
@@ -21,12 +21,12 @@ exports[`Explanation should snapshot when expanded: expanded 1`] = `
             aria-controls=":r1:"
             aria-disabled="false"
             aria-expanded="true"
-            class="button_vr44p2-o_O-shared_lwskrm-o_O-default_qjb97o-o_O-small_14crccx-o_O-inlineStyles_1s8anjv"
+            class="button_vr44p2-o_O-shared_lwskrm-o_O-default_1hl5pu8-o_O-small_14crccx-o_O-inlineStyles_1s8anjv"
             role="button"
             type="button"
           >
             <span
-              class="text_f1191h-o_O-LabelSmall_hl4zs1-o_O-text_1awp0u1-o_O-smallText_arcskg-o_O-textWithFocus_e296pg-o_O-inlineStyles_egvfd8"
+              class="text_f1191h-o_O-LabelSmall_hl4zs1-o_O-text_6kf3xs-o_O-textWithFocus_e296pg-o_O-hover_1nzvkun-o_O-inlineStyles_egvfd8"
             >
               Hide explanation!
             </span>
@@ -94,12 +94,12 @@ exports[`Explanation should snapshot: initial render 1`] = `
             aria-controls=":r0:"
             aria-disabled="false"
             aria-expanded="false"
-            class="button_vr44p2-o_O-shared_lwskrm-o_O-default_qjb97o-o_O-small_14crccx-o_O-inlineStyles_1s8anjv"
+            class="button_vr44p2-o_O-shared_lwskrm-o_O-default_1hl5pu8-o_O-small_14crccx-o_O-inlineStyles_1s8anjv"
             role="button"
             type="button"
           >
             <span
-              class="text_f1191h-o_O-LabelSmall_hl4zs1-o_O-text_1awp0u1-o_O-smallText_arcskg-o_O-textWithFocus_e296pg-o_O-inlineStyles_egvfd8"
+              class="text_f1191h-o_O-LabelSmall_hl4zs1-o_O-text_6kf3xs-o_O-textWithFocus_e296pg-o_O-inlineStyles_egvfd8"
             >
               Explanation
             </span>
diff --git a/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set-jipt.test.ts.snap b/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set-jipt.test.ts.snap
index fcf253b7dd..6d4b738751 100644
--- a/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set-jipt.test.ts.snap
+++ b/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set-jipt.test.ts.snap
@@ -251,12 +251,12 @@ exports[`graded-group-set should render all graded groups 1`] = `
               />
               <button
                 aria-disabled="false"
-                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_pxdq54"
+                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_1w5v67"
                 role="button"
                 type="button"
               >
                 <span
-                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_1awp0u1"
+                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_6kf3xs"
                 >
                   Check
                 </span>
@@ -493,12 +493,12 @@ exports[`graded-group-set should render all graded groups 1`] = `
               />
               <button
                 aria-disabled="false"
-                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_pxdq54"
+                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_1w5v67"
                 role="button"
                 type="button"
               >
                 <span
-                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_1awp0u1"
+                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_6kf3xs"
                 >
                   Check
                 </span>
@@ -735,12 +735,12 @@ exports[`graded-group-set should render all graded groups 1`] = `
               />
               <button
                 aria-disabled="false"
-                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_pxdq54"
+                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_1w5v67"
                 role="button"
                 type="button"
               >
                 <span
-                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_1awp0u1"
+                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_6kf3xs"
                 >
                   Check
                 </span>
diff --git a/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set.test.ts.snap b/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set.test.ts.snap
index 89358bc011..f8ece36faa 100644
--- a/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set.test.ts.snap
+++ b/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set.test.ts.snap
@@ -317,12 +317,12 @@ exports[`graded group widget should snapshot 1`] = `
               />
               <button
                 aria-disabled="false"
-                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_pxdq54"
+                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_1w5v67"
                 role="button"
                 type="button"
               >
                 <span
-                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_1awp0u1"
+                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_6kf3xs"
                 >
                   Check
                 </span>
diff --git a/packages/perseus/src/widgets/graded-group/__snapshots__/graded-group.test.ts.snap b/packages/perseus/src/widgets/graded-group/__snapshots__/graded-group.test.ts.snap
index 0476385b3e..d0b3e1d1cb 100644
--- a/packages/perseus/src/widgets/graded-group/__snapshots__/graded-group.test.ts.snap
+++ b/packages/perseus/src/widgets/graded-group/__snapshots__/graded-group.test.ts.snap
@@ -416,12 +416,12 @@ exports[`graded-group should snapshot: initial render (mobile: false) 1`] = `
             />
             <button
               aria-disabled="false"
-              class="button_vr44p2-o_O-shared_lwskrm-o_O-default_pxdq54"
+              class="button_vr44p2-o_O-shared_lwskrm-o_O-default_1w5v67"
               role="button"
               type="button"
             >
               <span
-                class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_1awp0u1"
+                class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_6kf3xs"
               >
                 Check
               </span>

From 786f7b865a7b68cb0a35df5f76e4b5d875e9328d Mon Sep 17 00:00:00 2001
From: Anakaren Rojas <anakaren@khanacademy.org>
Date: Thu, 16 Jan 2025 14:32:18 -0800
Subject: [PATCH 03/10] update tests

---
 .../__snapshots__/explanation.test.ts.snap           |  8 ++++----
 .../__snapshots__/graded-group-set-jipt.test.ts.snap | 12 ++++++------
 .../__snapshots__/graded-group-set.test.ts.snap      |  4 ++--
 .../__snapshots__/graded-group.test.ts.snap          |  4 ++--
 .../widgets/interactive-graphs/mafs-graph.test.tsx   |  2 +-
 5 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/packages/perseus/src/widgets/explanation/__snapshots__/explanation.test.ts.snap b/packages/perseus/src/widgets/explanation/__snapshots__/explanation.test.ts.snap
index 3383f7cfa0..e96e0672b6 100644
--- a/packages/perseus/src/widgets/explanation/__snapshots__/explanation.test.ts.snap
+++ b/packages/perseus/src/widgets/explanation/__snapshots__/explanation.test.ts.snap
@@ -21,12 +21,12 @@ exports[`Explanation should snapshot when expanded: expanded 1`] = `
             aria-controls=":r1:"
             aria-disabled="false"
             aria-expanded="true"
-            class="button_vr44p2-o_O-shared_lwskrm-o_O-default_1hl5pu8-o_O-small_14crccx-o_O-inlineStyles_1s8anjv"
+            class="button_vr44p2-o_O-shared_lwskrm-o_O-default_qjb97o-o_O-small_14crccx-o_O-inlineStyles_1s8anjv"
             role="button"
             type="button"
           >
             <span
-              class="text_f1191h-o_O-LabelSmall_hl4zs1-o_O-text_6kf3xs-o_O-textWithFocus_e296pg-o_O-hover_1nzvkun-o_O-inlineStyles_egvfd8"
+              class="text_f1191h-o_O-LabelSmall_hl4zs1-o_O-text_1awp0u1-o_O-smallText_arcskg-o_O-textWithFocus_e296pg-o_O-inlineStyles_egvfd8"
             >
               Hide explanation!
             </span>
@@ -94,12 +94,12 @@ exports[`Explanation should snapshot: initial render 1`] = `
             aria-controls=":r0:"
             aria-disabled="false"
             aria-expanded="false"
-            class="button_vr44p2-o_O-shared_lwskrm-o_O-default_1hl5pu8-o_O-small_14crccx-o_O-inlineStyles_1s8anjv"
+            class="button_vr44p2-o_O-shared_lwskrm-o_O-default_qjb97o-o_O-small_14crccx-o_O-inlineStyles_1s8anjv"
             role="button"
             type="button"
           >
             <span
-              class="text_f1191h-o_O-LabelSmall_hl4zs1-o_O-text_6kf3xs-o_O-textWithFocus_e296pg-o_O-inlineStyles_egvfd8"
+              class="text_f1191h-o_O-LabelSmall_hl4zs1-o_O-text_1awp0u1-o_O-smallText_arcskg-o_O-textWithFocus_e296pg-o_O-inlineStyles_egvfd8"
             >
               Explanation
             </span>
diff --git a/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set-jipt.test.ts.snap b/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set-jipt.test.ts.snap
index 6d4b738751..fcf253b7dd 100644
--- a/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set-jipt.test.ts.snap
+++ b/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set-jipt.test.ts.snap
@@ -251,12 +251,12 @@ exports[`graded-group-set should render all graded groups 1`] = `
               />
               <button
                 aria-disabled="false"
-                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_1w5v67"
+                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_pxdq54"
                 role="button"
                 type="button"
               >
                 <span
-                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_6kf3xs"
+                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_1awp0u1"
                 >
                   Check
                 </span>
@@ -493,12 +493,12 @@ exports[`graded-group-set should render all graded groups 1`] = `
               />
               <button
                 aria-disabled="false"
-                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_1w5v67"
+                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_pxdq54"
                 role="button"
                 type="button"
               >
                 <span
-                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_6kf3xs"
+                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_1awp0u1"
                 >
                   Check
                 </span>
@@ -735,12 +735,12 @@ exports[`graded-group-set should render all graded groups 1`] = `
               />
               <button
                 aria-disabled="false"
-                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_1w5v67"
+                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_pxdq54"
                 role="button"
                 type="button"
               >
                 <span
-                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_6kf3xs"
+                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_1awp0u1"
                 >
                   Check
                 </span>
diff --git a/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set.test.ts.snap b/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set.test.ts.snap
index f8ece36faa..89358bc011 100644
--- a/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set.test.ts.snap
+++ b/packages/perseus/src/widgets/graded-group-set/__snapshots__/graded-group-set.test.ts.snap
@@ -317,12 +317,12 @@ exports[`graded group widget should snapshot 1`] = `
               />
               <button
                 aria-disabled="false"
-                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_1w5v67"
+                class="button_vr44p2-o_O-shared_lwskrm-o_O-default_pxdq54"
                 role="button"
                 type="button"
               >
                 <span
-                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_6kf3xs"
+                  class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_1awp0u1"
                 >
                   Check
                 </span>
diff --git a/packages/perseus/src/widgets/graded-group/__snapshots__/graded-group.test.ts.snap b/packages/perseus/src/widgets/graded-group/__snapshots__/graded-group.test.ts.snap
index d0b3e1d1cb..0476385b3e 100644
--- a/packages/perseus/src/widgets/graded-group/__snapshots__/graded-group.test.ts.snap
+++ b/packages/perseus/src/widgets/graded-group/__snapshots__/graded-group.test.ts.snap
@@ -416,12 +416,12 @@ exports[`graded-group should snapshot: initial render (mobile: false) 1`] = `
             />
             <button
               aria-disabled="false"
-              class="button_vr44p2-o_O-shared_lwskrm-o_O-default_1w5v67"
+              class="button_vr44p2-o_O-shared_lwskrm-o_O-default_pxdq54"
               role="button"
               type="button"
             >
               <span
-                class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_6kf3xs"
+                class="text_f1191h-o_O-LabelLarge_5s82ln-o_O-text_1awp0u1"
               >
                 Check
               </span>
diff --git a/packages/perseus/src/widgets/interactive-graphs/mafs-graph.test.tsx b/packages/perseus/src/widgets/interactive-graphs/mafs-graph.test.tsx
index 44ba46ea08..97765b97a6 100644
--- a/packages/perseus/src/widgets/interactive-graphs/mafs-graph.test.tsx
+++ b/packages/perseus/src/widgets/interactive-graphs/mafs-graph.test.tsx
@@ -359,7 +359,7 @@ describe("MafsGraph", () => {
             />,
         );
 
-        expectLabelInDoc("Midline Intersection at -1 comma 1.");
+        expectLabelInDoc("Midline Intersection at -1/2 pi comma 1.");
         expectLabelInDoc("Extremum Point at 0 comma 0.");
     });
 

From 9cabe689a7aa143f95adf4556bf5c10d654a66ae Mon Sep 17 00:00:00 2001
From: Matthew <matthewcurtis@khanacademy.org>
Date: Fri, 17 Jan 2025 15:38:29 -0600
Subject: [PATCH 04/10] Move validation types from `perseus` to `perseus-score`
 (#2101)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

## Summary:
This looks like a lot, but it's basically just moving one file and updating imports.

Issue: LEMS-2737

## Test plan:
- No functionality should change, just moving types

Author: handeyeco

Reviewers: handeyeco, jeremywiebe, Myranae

Required Reviewers:

Approved By: jeremywiebe

Checks: ✅ Publish npm snapshot (ubuntu-latest, 20.x), ✅ Cypress (ubuntu-latest, 20.x), ✅ Check builds for changes in size (ubuntu-latest, 20.x), ✅ Check for .changeset entries for all changed files (ubuntu-latest, 20.x), ✅ Lint, Typecheck, Format, and Test (ubuntu-latest, 20.x), ✅ Publish Storybook to Chromatic (ubuntu-latest, 20.x)

Pull Request URL: https://github.com/Khan/perseus/pull/2101
---
 .changeset/quick-spoons-whisper.md            |  11 +
 config/test/custom-matchers.ts                |   2 +-
 dev/flipbook.tsx                              |   4 +-
 .../math => kmath/src}/angles.test.ts         |   0
 .../math => kmath/src}/angles.ts              |  16 +-
 packages/kmath/src/coefficients.ts            |  62 ++
 .../src/util => kmath/src}/geometry.test.ts   |   0
 .../src/util => kmath/src}/geometry.ts        |  25 +-
 packages/kmath/src/index.ts                   |   8 +
 packages/kmath/src/types.ts                   |   3 +
 .../components/key-handlers/key-translator.ts |   3 +-
 .../src/components/keypad/button-assets.tsx   |   7 +-
 packages/math-input/src/utils.ts              |  37 -
 packages/perseus-core/src/index.ts            |  10 +
 packages/perseus-core/src/types.ts            |  24 +
 .../perseus-core/src/utils/deep-clone.test.ts |  25 +
 packages/perseus-core/src/utils/deep-clone.ts |  18 +
 packages/perseus-core/src/utils/equality.ts   |  55 ++
 .../src/utils}/get-decimal-separator.ts       |   0
 .../perseus-core/src/utils/get-matrix-size.ts |  27 +
 .../src/utils}/grapher-types.ts               |   2 +-
 .../perseus-core/src/utils/grapher-util.ts    | 646 +++++++++++++++++
 packages/perseus-editor/package.json          |   1 +
 .../src/components/graph-settings.tsx         |   3 +-
 .../label-image-editor.stories.tsx            |   2 +-
 .../src/widgets/grapher-editor.tsx            |   4 +-
 .../src/widgets/input-number-editor.tsx       |  38 +-
 .../interaction-editor/interaction-editor.tsx |   3 +-
 .../start-coords/util.ts                      |   5 +-
 .../src/widgets/label-image-editor.tsx        |   2 +-
 .../__stories__/question-markers.stories.tsx  |   2 +-
 .../src/widgets/label-image/marker.tsx        |   2 +-
 .../widgets/label-image/question-markers.tsx  |   2 +-
 .../src/widgets/matrix-editor.tsx             |  25 +-
 packages/perseus-score/src/error-codes.ts     |   8 +
 packages/perseus-score/src/index.ts           |  25 +
 .../src/util}/tex-wrangler.test.ts            |   4 +-
 .../src/util}/tex-wrangler.ts                 |   9 +-
 .../src/validation.types.ts                   |  19 +-
 .../categorizer/score-categorizer.test.ts     |   6 +-
 .../widgets/categorizer/score-categorizer.ts  |  10 +-
 .../categorizer/validate-categorizer.test.ts  |  20 +-
 .../categorizer/validate-categorizer.ts       |  10 +-
 .../cs-program/score-cs-program.test.ts       |   0
 .../widgets/cs-program/score-cs-program.ts    |  11 +-
 .../widgets/dropdown/score-dropdown.test.ts   |  23 +-
 .../src/widgets/dropdown/score-dropdown.ts    |   2 +-
 .../dropdown/validate-dropdown.test.ts        |   0
 .../src/widgets/dropdown/validate-dropdown.ts |   6 +-
 .../expression/score-expression.test.ts       |   9 +-
 .../expression/score-expression.testdata.ts   |  36 +
 .../widgets/expression/score-expression.ts    |  22 +-
 .../expression/validate-expression.test.ts    |   0
 .../widgets/expression/validate-expression.ts |   6 +-
 .../src/widgets/grapher/score-grapher.test.ts |   4 +-
 .../src/widgets/grapher/score-grapher.ts      |  14 +-
 .../src/widgets/iframe/score-iframe.test.ts   |   2 +-
 .../src/widgets/iframe/score-iframe.ts        |  13 +-
 .../input-number/score-input-number.test.ts   |  53 +-
 .../input-number/score-input-number.ts        |  17 +-
 .../score-interactive-graph.test.ts           |   7 +-
 .../score-interactive-graph.ts                |  61 +-
 .../label-image/score-label-image.test.ts     |  14 +-
 .../widgets/label-image/score-label-image.ts  |  10 +-
 .../src/widgets/matcher/score-matcher.test.ts |   0
 .../src/widgets/matcher/score-matcher.ts      |   2 +-
 .../src/widgets/matrix/score-matrix.test.ts   |  38 +-
 .../src/widgets/matrix/score-matrix.ts        |  13 +-
 .../widgets/matrix/validate-matrix.test.ts    |   8 +-
 .../src/widgets/matrix/validate-matrix.ts     |  10 +-
 .../number-line/score-number-line.test.ts     |   0
 .../widgets/number-line/score-number-line.ts  |   2 +-
 .../number-line/validate-number-line.test.ts  |   0
 .../number-line/validate-number-line.ts       |   6 +-
 .../numeric-input/score-numeric-input.test.ts |  74 +-
 .../numeric-input/score-numeric-input.ts      |  15 +-
 .../src/widgets/orderer/score-orderer.test.ts |  48 +-
 .../src/widgets/orderer/score-orderer.ts      |   6 +-
 .../widgets/orderer/validate-orderer.test.ts  |   0
 .../src/widgets/orderer/validate-orderer.ts   |   6 +-
 .../src/widgets/plotter/score-plotter.test.ts |   0
 .../src/widgets/plotter/score-plotter.ts      |  11 +-
 .../widgets/plotter/validate-plotter.test.ts  |   0
 .../src/widgets/plotter/validate-plotter.ts   |   9 +-
 .../src/widgets/radio/score-radio.test.ts     |  18 +-
 .../src/widgets/radio/score-radio.ts          |  10 +-
 .../src/widgets/radio/validate-radio.test.ts  |   0
 .../src/widgets/radio/validate-radio.ts       |   6 +-
 .../src/widgets/sorter/score-sorter.test.ts   |   2 +-
 .../src/widgets/sorter/score-sorter.ts        |   9 +-
 .../widgets/sorter/validate-sorter.test.ts    |   0
 .../src/widgets/sorter/validate-sorter.ts     |   6 +-
 .../src/widgets/table/score-table.test.ts     |  16 +-
 .../src/widgets/table/score-table.ts          |   7 +-
 .../src/widgets/table/utils.ts                |   0
 .../src/widgets/table/validate-table.test.ts  |   0
 .../src/widgets/table/validate-table.ts       |   6 +-
 .../src/__tests__/renderer-api.test.tsx       |   2 +-
 packages/perseus/src/__tests__/util.test.ts   |  24 -
 .../perseus/src/components/graphie-classes.ts |   9 +-
 packages/perseus/src/components/graphie.tsx   |  10 +-
 packages/perseus/src/index.ts                 |   9 -
 packages/perseus/src/renderer-util.test.ts    |   2 +-
 packages/perseus/src/renderer-util.ts         |   7 +-
 packages/perseus/src/renderer.tsx             |   7 +-
 packages/perseus/src/server-item-renderer.tsx |   2 +-
 packages/perseus/src/strings.ts               |  41 +-
 packages/perseus/src/types.ts                 |  28 +-
 packages/perseus/src/util.ts                  |  74 --
 packages/perseus/src/util/interactive.ts      |   4 +-
 .../perseus/src/util/is-real-json-parse.ts    |   6 +-
 packages/perseus/src/util/scoring.ts          |   3 +-
 packages/perseus/src/util/test-utils.ts       |   3 +-
 .../categorizer/categorizer-ai-utils.test.ts  |   2 +-
 .../categorizer/categorizer-ai-utils.ts       |   2 +-
 .../dropdown/dropdown-ai-utils.test.ts        |   2 +-
 .../dropdown/dropdown-ai-utils.ts             |   2 +-
 .../expression/expression-ai-utils.ts         |   2 +-
 .../grapher/grapher-ai-utils.ts               |   2 +-
 .../input-number-ai-utils.test.ts             |   2 +-
 .../input-number/input-number-ai-utils.ts     |   2 +-
 .../label-image/label-image-ai-utils.ts       |   2 +-
 .../matcher/matcher-ai-utils.test.tsx         |   2 +-
 .../matcher/matcher-ai-utils.ts               |   2 +-
 .../widget-ai-utils/matrix/matrix-ai-utils.ts |   2 +-
 .../mock-widget/prompt-utils.test.ts          |   2 +-
 .../mock-widget/prompt-utils.ts               |   2 +-
 .../number-line/number-line-ai-utils.ts       |   2 +-
 .../numeric-input/prompt-utils.test.ts        |   2 +-
 .../numeric-input/prompt-utils.ts             |   2 +-
 .../orderer/orderer-ai-utils.ts               |   2 +-
 .../radio/radio-ai-utils.test.ts              |   2 +-
 .../widget-ai-utils/radio/radio-ai-utils.ts   |   2 +-
 .../sorter/sorter-ai-utils.test.ts            |   2 +-
 .../widget-ai-utils/sorter/sorter-ai-utils.ts |   2 +-
 .../src/widgets/__shared__/score-noop.ts      |   2 +-
 .../widgets/categorizer/categorizer.test.ts   |   4 +-
 .../src/widgets/categorizer/categorizer.tsx   |   8 +-
 .../src/widgets/cs-program/cs-program.test.ts |   2 +-
 .../src/widgets/cs-program/cs-program.tsx     |  11 +-
 .../perseus/src/widgets/dropdown/dropdown.tsx |   9 +-
 .../src/widgets/expression/expression.tsx     |  17 +-
 .../graded-group-set/graded-group-set.tsx     |   2 +-
 .../src/widgets/graded-group/graded-group.tsx |   6 +-
 .../perseus/src/widgets/grapher/grapher.tsx   |  18 +-
 packages/perseus/src/widgets/grapher/util.tsx | 661 +-----------------
 packages/perseus/src/widgets/group/group.tsx  |   5 +-
 .../perseus/src/widgets/group/score-group.ts  |   4 +-
 .../perseus/src/widgets/iframe/iframe.tsx     |  13 +-
 .../widgets/input-number/input-number.test.ts |  33 +-
 .../src/widgets/input-number/input-number.tsx |  14 +-
 .../perseus/src/widgets/interactive-graph.tsx |  69 +-
 .../interactive-graphs/graphs/angle.tsx       |   5 +-
 .../components/angle-indicators.test.ts       |   4 +-
 .../graphs/components/angle-indicators.tsx    |   7 +-
 .../graphs/components/vector.tsx              |   4 +-
 .../interactive-graphs/graphs/quadratic.tsx   |   3 +-
 .../interactive-graphs/graphs/sinusoid.tsx    |  18 +-
 .../locked-figures/locked-line.tsx            |   5 +-
 .../widgets/interactive-graphs/math/index.ts  |   7 -
 .../widgets/interactive-graphs/protractor.tsx |  11 +-
 .../reducer/initialize-graph-state.ts         |   4 +-
 .../reducer/interactive-graph-reducer.test.ts |   5 +-
 .../reducer/interactive-graph-reducer.ts      |  51 +-
 .../reducer/interactive-graph-state.ts        |   4 +-
 .../stateful-mafs-graph.tsx                   |   2 +-
 .../src/widgets/interactive-graphs/types.ts   |   3 +-
 .../src/widgets/label-image/label-image.tsx   |  21 +-
 .../src/widgets/label-image/marker.tsx        |   6 +-
 .../perseus/src/widgets/label-image/types.ts  |  19 -
 .../perseus/src/widgets/matcher/matcher.tsx   |  11 +-
 .../perseus/src/widgets/matrix/matrix.tsx     |  44 +-
 .../src/widgets/mock-widgets/mock-widget.tsx  |   6 +-
 .../widgets/mock-widgets/score-mock-widget.ts |   4 +-
 .../src/widgets/number-line/number-line.tsx   |  10 +-
 .../numeric-input/numeric-input.test.ts       |   2 +-
 .../widgets/numeric-input/numeric-input.tsx   |  11 +-
 .../perseus/src/widgets/orderer/orderer.tsx   |  11 +-
 .../perseus/src/widgets/plotter/plotter.tsx   |  11 +-
 .../src/widgets/radio/__tests__/radio.test.ts |  19 +-
 .../src/widgets/radio/radio-component.tsx     |  16 +-
 packages/perseus/src/widgets/radio/radio.ts   |   2 +-
 .../perseus/src/widgets/sorter/sorter.tsx     |  11 +-
 packages/perseus/src/widgets/table/table.tsx  |  11 +-
 184 files changed, 1680 insertions(+), 1644 deletions(-)
 create mode 100644 .changeset/quick-spoons-whisper.md
 rename packages/{perseus/src/widgets/interactive-graphs/math => kmath/src}/angles.test.ts (100%)
 rename packages/{perseus/src/widgets/interactive-graphs/math => kmath/src}/angles.ts (86%)
 create mode 100644 packages/kmath/src/coefficients.ts
 rename packages/{perseus/src/util => kmath/src}/geometry.test.ts (100%)
 rename packages/{perseus/src/util => kmath/src}/geometry.ts (96%)
 create mode 100644 packages/kmath/src/types.ts
 create mode 100644 packages/perseus-core/src/utils/deep-clone.test.ts
 create mode 100644 packages/perseus-core/src/utils/deep-clone.ts
 create mode 100644 packages/perseus-core/src/utils/equality.ts
 rename packages/{perseus/src/widgets/expression => perseus-core/src/utils}/get-decimal-separator.ts (100%)
 create mode 100644 packages/perseus-core/src/utils/get-matrix-size.ts
 rename packages/{perseus/src/widgets/grapher => perseus-core/src/utils}/grapher-types.ts (97%)
 create mode 100644 packages/perseus-core/src/utils/grapher-util.ts
 rename packages/{perseus/src/__tests__ => perseus-score/src/util}/tex-wrangler.test.ts (96%)
 rename packages/{perseus/src => perseus-score/src/util}/tex-wrangler.ts (97%)
 rename packages/{perseus => perseus-score}/src/validation.types.ts (95%)
 rename packages/{perseus => perseus-score}/src/widgets/categorizer/score-categorizer.test.ts (81%)
 rename packages/{perseus => perseus-score}/src/widgets/categorizer/score-categorizer.ts (74%)
 rename packages/{perseus => perseus-score}/src/widgets/categorizer/validate-categorizer.test.ts (57%)
 rename packages/{perseus => perseus-score}/src/widgets/categorizer/validate-categorizer.ts (80%)
 rename packages/{perseus => perseus-score}/src/widgets/cs-program/score-cs-program.test.ts (100%)
 rename packages/{perseus => perseus-score}/src/widgets/cs-program/score-cs-program.ts (69%)
 rename packages/{perseus => perseus-score}/src/widgets/dropdown/score-dropdown.test.ts (61%)
 rename packages/{perseus => perseus-score}/src/widgets/dropdown/score-dropdown.ts (92%)
 rename packages/{perseus => perseus-score}/src/widgets/dropdown/validate-dropdown.test.ts (100%)
 rename packages/{perseus => perseus-score}/src/widgets/dropdown/validate-dropdown.ts (77%)
 rename packages/{perseus => perseus-score}/src/widgets/expression/score-expression.test.ts (95%)
 create mode 100644 packages/perseus-score/src/widgets/expression/score-expression.testdata.ts
 rename packages/{perseus => perseus-score}/src/widgets/expression/score-expression.ts (92%)
 rename packages/{perseus => perseus-score}/src/widgets/expression/validate-expression.test.ts (100%)
 rename packages/{perseus => perseus-score}/src/widgets/expression/validate-expression.ts (80%)
 rename packages/{perseus => perseus-score}/src/widgets/grapher/score-grapher.test.ts (98%)
 rename packages/{perseus => perseus-score}/src/widgets/grapher/score-grapher.ts (86%)
 rename packages/{perseus => perseus-score}/src/widgets/iframe/score-iframe.test.ts (96%)
 rename packages/{perseus => perseus-score}/src/widgets/iframe/score-iframe.ts (66%)
 rename packages/{perseus => perseus-score}/src/widgets/input-number/score-input-number.test.ts (68%)
 rename packages/{perseus => perseus-score}/src/widgets/input-number/score-input-number.ts (82%)
 rename packages/{perseus/src/widgets/interactive-graphs => perseus-score/src/widgets/interactive-graph}/score-interactive-graph.test.ts (98%)
 rename packages/{perseus/src/widgets/interactive-graphs => perseus-score/src/widgets/interactive-graph}/score-interactive-graph.ts (88%)
 rename packages/{perseus => perseus-score}/src/widgets/label-image/score-label-image.test.ts (94%)
 rename packages/{perseus => perseus-score}/src/widgets/label-image/score-label-image.ts (92%)
 rename packages/{perseus => perseus-score}/src/widgets/matcher/score-matcher.test.ts (100%)
 rename packages/{perseus => perseus-score}/src/widgets/matcher/score-matcher.ts (91%)
 rename packages/{perseus => perseus-score}/src/widgets/matrix/score-matrix.test.ts (83%)
 rename packages/{perseus => perseus-score}/src/widgets/matrix/score-matrix.ts (86%)
 rename packages/{perseus => perseus-score}/src/widgets/matrix/validate-matrix.test.ts (81%)
 rename packages/{perseus => perseus-score}/src/widgets/matrix/validate-matrix.ts (80%)
 rename packages/{perseus => perseus-score}/src/widgets/number-line/score-number-line.test.ts (100%)
 rename packages/{perseus => perseus-score}/src/widgets/number-line/score-number-line.ts (96%)
 rename packages/{perseus => perseus-score}/src/widgets/number-line/validate-number-line.test.ts (100%)
 rename packages/{perseus => perseus-score}/src/widgets/number-line/validate-number-line.ts (86%)
 rename packages/{perseus => perseus-score}/src/widgets/numeric-input/score-numeric-input.test.ts (86%)
 rename packages/{perseus => perseus-score}/src/widgets/numeric-input/score-numeric-input.ts (93%)
 rename packages/{perseus => perseus-score}/src/widgets/orderer/score-orderer.test.ts (66%)
 rename packages/{perseus => perseus-score}/src/widgets/orderer/score-orderer.ts (89%)
 rename packages/{perseus => perseus-score}/src/widgets/orderer/validate-orderer.test.ts (100%)
 rename packages/{perseus => perseus-score}/src/widgets/orderer/validate-orderer.ts (79%)
 rename packages/{perseus => perseus-score}/src/widgets/plotter/score-plotter.test.ts (100%)
 rename packages/{perseus => perseus-score}/src/widgets/plotter/score-plotter.ts (74%)
 rename packages/{perseus => perseus-score}/src/widgets/plotter/validate-plotter.test.ts (100%)
 rename packages/{perseus => perseus-score}/src/widgets/plotter/validate-plotter.ts (77%)
 rename packages/{perseus => perseus-score}/src/widgets/radio/score-radio.test.ts (89%)
 rename packages/{perseus => perseus-score}/src/widgets/radio/score-radio.ts (88%)
 rename packages/{perseus => perseus-score}/src/widgets/radio/validate-radio.test.ts (100%)
 rename packages/{perseus => perseus-score}/src/widgets/radio/validate-radio.ts (86%)
 rename packages/{perseus => perseus-score}/src/widgets/sorter/score-sorter.test.ts (100%)
 rename packages/{perseus => perseus-score}/src/widgets/sorter/score-sorter.ts (74%)
 rename packages/{perseus => perseus-score}/src/widgets/sorter/validate-sorter.test.ts (100%)
 rename packages/{perseus => perseus-score}/src/widgets/sorter/validate-sorter.ts (89%)
 rename packages/{perseus => perseus-score}/src/widgets/table/score-table.test.ts (87%)
 rename packages/{perseus => perseus-score}/src/widgets/table/score-table.ts (89%)
 rename packages/{perseus => perseus-score}/src/widgets/table/utils.ts (100%)
 rename packages/{perseus => perseus-score}/src/widgets/table/validate-table.test.ts (100%)
 rename packages/{perseus => perseus-score}/src/widgets/table/validate-table.ts (81%)
 delete mode 100644 packages/perseus/src/widgets/label-image/types.ts

diff --git a/.changeset/quick-spoons-whisper.md b/.changeset/quick-spoons-whisper.md
new file mode 100644
index 0000000000..14438fa3e8
--- /dev/null
+++ b/.changeset/quick-spoons-whisper.md
@@ -0,0 +1,11 @@
+---
+"@khanacademy/perseus": major
+"@khanacademy/kmath": minor
+"@khanacademy/perseus-core": minor
+"@khanacademy/perseus-score": minor
+"@khanacademy/perseus-dev-ui": patch
+"@khanacademy/math-input": patch
+"@khanacademy/perseus-editor": patch
+---
+
+Move scorers and validators to `perseus-score`
diff --git a/config/test/custom-matchers.ts b/config/test/custom-matchers.ts
index afddd66c24..4f2eab260b 100644
--- a/config/test/custom-matchers.ts
+++ b/config/test/custom-matchers.ts
@@ -1,6 +1,6 @@
 // Ok here we are
 
-import type {PerseusScore} from "../../packages/perseus/src/types";
+import type {PerseusScore} from "../../packages/perseus-score/src/validation.types";
 
 declare global {
     // eslint-disable-next-line @typescript-eslint/no-namespace
diff --git a/dev/flipbook.tsx b/dev/flipbook.tsx
index b6cf09fb3c..1944dffebf 100644
--- a/dev/flipbook.tsx
+++ b/dev/flipbook.tsx
@@ -39,13 +39,15 @@ import {
 } from "./flipbook-model";
 import {Header} from "./header";
 
-import type {APIOptions, PerseusScore} from "../packages/perseus/src";
+import type {APIOptions} from "../packages/perseus/src";
 import type {
     InteractiveGraphWidget,
     PerseusRenderer,
     PerseusWidget,
 } from "../packages/perseus-core/src/data-schema";
+import type {PerseusScore} from "../packages/perseus-score/src/validation.types";
 import type {PropsFor} from "@khanacademy/wonder-blocks-core";
+
 import "../packages/perseus/src/styles/perseus-renderer.less";
 
 const exampleCommands = `
diff --git a/packages/perseus/src/widgets/interactive-graphs/math/angles.test.ts b/packages/kmath/src/angles.test.ts
similarity index 100%
rename from packages/perseus/src/widgets/interactive-graphs/math/angles.test.ts
rename to packages/kmath/src/angles.test.ts
diff --git a/packages/perseus/src/widgets/interactive-graphs/math/angles.ts b/packages/kmath/src/angles.ts
similarity index 86%
rename from packages/perseus/src/widgets/interactive-graphs/math/angles.ts
rename to packages/kmath/src/angles.ts
index c2d20bd4e8..ec4b55b294 100644
--- a/packages/perseus/src/widgets/interactive-graphs/math/angles.ts
+++ b/packages/kmath/src/angles.ts
@@ -1,9 +1,8 @@
-import {clockwise} from "../../../util/geometry";
+// This file contains helper functions for working with angles.
 
-import type {Coord} from "@khanacademy/perseus";
-import type {vec} from "mafs";
+import {clockwise} from "./geometry";
 
-// This file contains helper functions for working with angles.
+import type {Coord} from "@khanacademy/perseus-core";
 
 export function convertDegreesToRadians(degrees: number): number {
     return (degrees / 180) * Math.PI;
@@ -11,12 +10,12 @@ export function convertDegreesToRadians(degrees: number): number {
 
 // Returns a value between -180 and 180, inclusive. The angle is measured
 // between the positive x-axis and the given vector.
-export function calculateAngleInDegrees([x, y]: vec.Vector2): number {
+export function calculateAngleInDegrees([x, y]: Coord): number {
     return (Math.atan2(y, x) * 180) / Math.PI;
 }
 
 // Converts polar coordinates to cartesian. The th(eta) parameter is in degrees.
-export function polar(r: number | vec.Vector2, th: number): vec.Vector2 {
+export function polar(r: number | Coord, th: number): Coord {
     if (typeof r === "number") {
         r = [r, r];
     }
@@ -26,10 +25,7 @@ export function polar(r: number | vec.Vector2, th: number): vec.Vector2 {
 // This function calculates the angle between two points and an optional vertex.
 // If the vertex is not provided, the angle is measured between the two points.
 // This does not account for reflex angles or clockwise position.
-export const getAngleFromVertex = (
-    point: vec.Vector2,
-    vertex: vec.Vector2,
-): number => {
+export const getAngleFromVertex = (point: Coord, vertex: Coord): number => {
     const x = point[0] - vertex[0];
     const y = point[1] - vertex[1];
     if (!x && !y) {
diff --git a/packages/kmath/src/coefficients.ts b/packages/kmath/src/coefficients.ts
new file mode 100644
index 0000000000..c33c9ba9b2
--- /dev/null
+++ b/packages/kmath/src/coefficients.ts
@@ -0,0 +1,62 @@
+import type {SineCoefficient} from "./geometry";
+import type {Coord} from "@khanacademy/perseus-core";
+
+export type NamedSineCoefficient = {
+    amplitude: number;
+    angularFrequency: number;
+    phase: number;
+    verticalOffset: number;
+};
+
+// TODO: there's another, very similar getSinusoidCoefficients function
+// they should probably be merged
+export function getSinusoidCoefficients(
+    coords: ReadonlyArray<Coord>,
+): SineCoefficient {
+    // It's assumed that p1 is the root and p2 is the first peak
+    const p1 = coords[0];
+    const p2 = coords[1];
+
+    // Resulting coefficients are canonical for this sine curve
+    const amplitude = p2[1] - p1[1];
+    const angularFrequency = Math.PI / (2 * (p2[0] - p1[0]));
+    const phase = p1[0] * angularFrequency;
+    const verticalOffset = p1[1];
+
+    return [amplitude, angularFrequency, phase, verticalOffset];
+}
+
+export type QuadraticCoefficient = [number, number, number];
+
+// TODO: there's another, very similar getQuadraticCoefficients function
+// they should probably be merged
+export function getQuadraticCoefficients(
+    coords: ReadonlyArray<Coord>,
+): QuadraticCoefficient {
+    const p1 = coords[0];
+    const p2 = coords[1];
+    const p3 = coords[2];
+
+    const denom = (p1[0] - p2[0]) * (p1[0] - p3[0]) * (p2[0] - p3[0]);
+    if (denom === 0) {
+        // Many of the callers assume that the return value is always defined.
+        // @ts-expect-error - TS2322 - Type 'undefined' is not assignable to type 'QuadraticCoefficient'.
+        return;
+    }
+    const a =
+        (p3[0] * (p2[1] - p1[1]) +
+            p2[0] * (p1[1] - p3[1]) +
+            p1[0] * (p3[1] - p2[1])) /
+        denom;
+    const b =
+        (p3[0] * p3[0] * (p1[1] - p2[1]) +
+            p2[0] * p2[0] * (p3[1] - p1[1]) +
+            p1[0] * p1[0] * (p2[1] - p3[1])) /
+        denom;
+    const c =
+        (p2[0] * p3[0] * (p2[0] - p3[0]) * p1[1] +
+            p3[0] * p1[0] * (p3[0] - p1[0]) * p2[1] +
+            p1[0] * p2[0] * (p1[0] - p2[0]) * p3[1]) /
+        denom;
+    return [a, b, c];
+}
diff --git a/packages/perseus/src/util/geometry.test.ts b/packages/kmath/src/geometry.test.ts
similarity index 100%
rename from packages/perseus/src/util/geometry.test.ts
rename to packages/kmath/src/geometry.test.ts
diff --git a/packages/perseus/src/util/geometry.ts b/packages/kmath/src/geometry.ts
similarity index 96%
rename from packages/perseus/src/util/geometry.ts
rename to packages/kmath/src/geometry.ts
index ab7eacc0fe..3ded900a65 100644
--- a/packages/perseus/src/util/geometry.ts
+++ b/packages/kmath/src/geometry.ts
@@ -2,14 +2,16 @@
  * A collection of geomtry-related utility functions
  */
 
-import {number as knumber, point as kpoint, sum} from "@khanacademy/kmath";
+import {
+    approximateDeepEqual,
+    approximateEqual,
+    type Coord,
+} from "@khanacademy/perseus-core";
 import _ from "underscore";
 
-import Util from "../util";
-
-import type {Coord, Line} from "../interactive2/types";
+import {number as knumber, point as kpoint, sum} from "@khanacademy/kmath";
 
-const {eq, deepEq} = Util;
+type Line = [Coord, Coord];
 
 // This should really be a readonly tuple of [number, number]
 export type Range = [number, number];
@@ -21,12 +23,9 @@ export type SineCoefficient = [
     number, // verticalOffset
 ];
 
-// a, b, c
-export type QuadraticCoefficient = [number, number, number];
-
 // Given a number, return whether it is positive (1), negative (-1), or zero (0)
 export function sign(val: number): 0 | 1 | -1 {
-    if (eq(val, 0)) {
+    if (approximateEqual(val, 0)) {
         return 0;
     }
     return val > 0 ? 1 : -1;
@@ -39,7 +38,7 @@ export function ccw(a: Coord, b: Coord, c: Coord): number {
 }
 
 export function collinear(a: Coord, b: Coord, c: Coord): boolean {
-    return eq(ccw(a, b, c), 0);
+    return approximateEqual(ccw(a, b, c), 0);
 }
 
 // Given rect bounding points A and B, whether point C is inside the rect
@@ -229,7 +228,7 @@ export function similar(
         // @ts-expect-error - TS4104 - The type 'readonly number[]' is 'readonly' and cannot be assigned to the mutable type 'number[]'.
         sides = rotate(sides, i);
 
-        if (deepEq(angles1, angles)) {
+        if (approximateDeepEqual(angles1, angles)) {
             const sidePairs = _.zip(sides1, sides);
 
             const factors = _.map(sidePairs, function (pair) {
@@ -237,7 +236,7 @@ export function similar(
             });
 
             const same = _.all(factors, function (factor) {
-                return eq(factors[0], factor);
+                return approximateEqual(factors[0], factor);
             });
 
             const congruentEnough = _.all(sidePairs, function (pair) {
@@ -304,7 +303,7 @@ export function rotate<T>(
 }
 
 export function getLineEquation(first: Coord, second: Coord): string {
-    if (eq(first[0], second[0])) {
+    if (approximateEqual(first[0], second[0])) {
         return "x = " + first[0].toFixed(3);
     }
     const m = (second[1] - first[1]) / (second[0] - first[0]);
diff --git a/packages/kmath/src/index.ts b/packages/kmath/src/index.ts
index cbeb7d8403..284f4eb02e 100644
--- a/packages/kmath/src/index.ts
+++ b/packages/kmath/src/index.ts
@@ -5,5 +5,13 @@ export * as vector from "./vector";
 export * as point from "./point";
 export * as line from "./line";
 export * as ray from "./ray";
+export * as angles from "./angles";
+export * as geometry from "./geometry";
+export * as coefficients from "./coefficients";
 
 export {default as KhanMath, sum} from "./math";
+
+export type {Range, SineCoefficient} from "./geometry";
+export type {NamedSineCoefficient, QuadraticCoefficient} from "./coefficients";
+
+export type * from "./types";
diff --git a/packages/kmath/src/types.ts b/packages/kmath/src/types.ts
new file mode 100644
index 0000000000..7c24a6dd7b
--- /dev/null
+++ b/packages/kmath/src/types.ts
@@ -0,0 +1,3 @@
+import type {Coord} from "@khanacademy/perseus-core";
+
+export type QuadraticCoords = [Coord, Coord, Coord];
diff --git a/packages/math-input/src/components/key-handlers/key-translator.ts b/packages/math-input/src/components/key-handlers/key-translator.ts
index ced26e7254..6d5b8347bf 100644
--- a/packages/math-input/src/components/key-handlers/key-translator.ts
+++ b/packages/math-input/src/components/key-handlers/key-translator.ts
@@ -1,5 +1,6 @@
+import {getDecimalSeparator} from "@khanacademy/perseus-core";
+
 import {MathFieldActionType} from "../../types";
-import {getDecimalSeparator} from "../../utils";
 import {mathQuillInstance} from "../input/mathquill-instance";
 
 import handleArrow from "./handle-arrow";
diff --git a/packages/math-input/src/components/keypad/button-assets.tsx b/packages/math-input/src/components/keypad/button-assets.tsx
index 732efcd596..5803f6ceca 100644
--- a/packages/math-input/src/components/keypad/button-assets.tsx
+++ b/packages/math-input/src/components/keypad/button-assets.tsx
@@ -10,9 +10,9 @@ asset.
 In the future it would be great if these were included from files so that
 no copying and pasting is necessary.
 */
+import {getDecimalSeparator} from "@khanacademy/perseus-core";
 import * as React from "react";
 
-import {DecimalSeparator, getDecimalSeparator} from "../../utils";
 import {useMathInputI18n} from "../i18n-context";
 
 import type Key from "../../data/keys";
@@ -176,10 +176,7 @@ export default function ButtonAsset({id}: Props): React.ReactNode {
         case "PERIOD":
             // Different locales use different symbols for the decimal separator
             // (, vs .)
-            if (
-                id === "DECIMAL" &&
-                getDecimalSeparator(locale) === DecimalSeparator.COMMA
-            ) {
+            if (id === "DECIMAL" && getDecimalSeparator(locale) !== ".") {
                 // comma decimal separator
                 return (
                     <svg
diff --git a/packages/math-input/src/utils.ts b/packages/math-input/src/utils.ts
index 09bc4e1844..e8344e9a96 100644
--- a/packages/math-input/src/utils.ts
+++ b/packages/math-input/src/utils.ts
@@ -1,40 +1,3 @@
-export const DecimalSeparator = {
-    COMMA: ",",
-    PERIOD: ".",
-} as const;
-
-/**
- *  Get the character used for separating decimals.
- */
-export const getDecimalSeparator = (locale: string): string => {
-    let separator: string = DecimalSeparator.PERIOD;
-
-    switch (locale) {
-        // TODO(somewhatabstract): Remove this when Chrome supports the `ka`
-        // locale properly.
-        // https://github.com/formatjs/formatjs/issues/1526#issuecomment-559891201
-        //
-        // Supported locales in Chrome:
-        // https://source.chromium.org/chromium/chromium/src/+/master:third_party/icu/scripts/chrome_ui_languages.list
-        case "ka":
-            separator = ",";
-            break;
-
-        default:
-            const numberWithDecimalSeparator = 1.1;
-            // TODO(FEI-3647): Update to use .formatToParts() once we no longer have to
-            // support Safari 12.
-            const match = new Intl.NumberFormat(locale)
-                .format(numberWithDecimalSeparator)
-                // 0x661 is ARABIC-INDIC DIGIT ONE
-                // 0x6F1 is EXTENDED ARABIC-INDIC DIGIT ONE
-                .match(/[^\d\u0661\u06F1]/);
-            separator = match?.[0] ?? ".";
-    }
-
-    return separator === "," ? DecimalSeparator.COMMA : DecimalSeparator.PERIOD;
-};
-
 const CDOT_ONLY = [
     "az",
     "cs",
diff --git a/packages/perseus-core/src/index.ts b/packages/perseus-core/src/index.ts
index c34af77712..df95a6a770 100644
--- a/packages/perseus-core/src/index.ts
+++ b/packages/perseus-core/src/index.ts
@@ -3,11 +3,21 @@ export type {
     KEScore,
     KeypadContextRendererInterface,
     RendererInterface,
+    MarkerType,
+    InteractiveMarkerType,
+    Relationship,
 } from "./types";
 export type {ErrorKind} from "./error/errors";
+export type {FunctionTypeMappingKeys} from "./utils/grapher-util";
+export type {Coords} from "./utils/grapher-types";
 
 // Careful, `version.ts` uses this function so it _must_ be imported above it
 export {addLibraryVersionToPerseusDebug} from "./utils/add-library-version-to-perseus-debug";
+export {default as getMatrixSize} from "./utils/get-matrix-size";
+export {default as getDecimalSeparator} from "./utils/get-decimal-separator";
+export {approximateEqual, approximateDeepEqual} from "./utils/equality";
+export {default as deepClone} from "./utils/deep-clone";
+export * as GrapherUtil from "./utils/grapher-util";
 
 export {libVersion} from "./version";
 
diff --git a/packages/perseus-core/src/types.ts b/packages/perseus-core/src/types.ts
index 2e71b875bd..0369c2b9a5 100644
--- a/packages/perseus-core/src/types.ts
+++ b/packages/perseus-core/src/types.ts
@@ -27,3 +27,27 @@ export type KEScore = {
     guess: any;
     state: any;
 };
+
+// Base marker, with the props that are set by the editor.
+export type MarkerType = {
+    // The list of correct answers expected for the marker.
+    answers: ReadonlyArray<string>;
+    // The marker title or description.
+    label: string;
+    // The marker coordinates on the question image as percent of image size.
+    x: number;
+    y: number;
+};
+
+// Additional props that are set when user interacts with the marker.
+export type InteractiveMarkerType = MarkerType & {
+    // The user selected list of answers, used to grade the question.
+    selected?: ReadonlyArray<string>;
+    // Reveal the correctness state of the user selected answers for the marker.
+    showCorrectness?: "correct" | "incorrect";
+    focused?: boolean;
+};
+
+// Used for NumberLine
+// TODO: can this be merged with PerseusNumberLineWidgetOptions.correctRel?
+export type Relationship = "lt" | "gt" | "le" | "ge";
diff --git a/packages/perseus-core/src/utils/deep-clone.test.ts b/packages/perseus-core/src/utils/deep-clone.test.ts
new file mode 100644
index 0000000000..682349af3f
--- /dev/null
+++ b/packages/perseus-core/src/utils/deep-clone.test.ts
@@ -0,0 +1,25 @@
+import deepClone from "./deep-clone";
+
+describe("deepClone", () => {
+    it("does nothing to a primitive", () => {
+        expect(deepClone(3)).toBe(3);
+    });
+
+    it("copies an array", () => {
+        const input = [1, 2, 3];
+
+        const result = deepClone(input);
+
+        expect(result).toEqual(input);
+        expect(result).not.toBe(input);
+    });
+
+    it("recursively clones array elements", () => {
+        const input = [[1]];
+
+        const result = deepClone(input);
+
+        expect(result).toEqual(input);
+        expect(result[0]).not.toBe(input[0]);
+    });
+});
diff --git a/packages/perseus-core/src/utils/deep-clone.ts b/packages/perseus-core/src/utils/deep-clone.ts
new file mode 100644
index 0000000000..941a89e95a
--- /dev/null
+++ b/packages/perseus-core/src/utils/deep-clone.ts
@@ -0,0 +1,18 @@
+// TODO(benchristel): in the future, we may want to make deepClone work for
+// Record<string, Cloneable> as well. Currently, it only does arrays.
+type Cloneable =
+    | null
+    | undefined
+    | boolean
+    | string
+    | number
+    | Cloneable[]
+    | readonly Cloneable[];
+function deepClone<T extends Cloneable>(obj: T): T {
+    if (Array.isArray(obj)) {
+        return obj.map(deepClone) as T;
+    }
+    return obj;
+}
+
+export default deepClone;
diff --git a/packages/perseus-core/src/utils/equality.ts b/packages/perseus-core/src/utils/equality.ts
new file mode 100644
index 0000000000..9d2bf59e46
--- /dev/null
+++ b/packages/perseus-core/src/utils/equality.ts
@@ -0,0 +1,55 @@
+import _ from "underscore";
+
+/**
+ * APPROXIMATE equality on numbers and primitives.
+ */
+export function approximateEqual<T>(x: T, y: T): boolean {
+    if (typeof x === "number" && typeof y === "number") {
+        return Math.abs(x - y) < 1e-9;
+    }
+    return x === y;
+}
+
+/**
+ * Deep APPROXIMATE equality on primitives, numbers, arrays, and objects.
+ * Recursive.
+ */
+export function approximateDeepEqual<T>(x: T, y: T): boolean {
+    if (Array.isArray(x) && Array.isArray(y)) {
+        if (x.length !== y.length) {
+            return false;
+        }
+        for (let i = 0; i < x.length; i++) {
+            if (!approximateDeepEqual(x[i], y[i])) {
+                return false;
+            }
+        }
+        return true;
+    }
+    if (Array.isArray(x) || Array.isArray(y)) {
+        return false;
+    }
+    if (typeof x === "function" && typeof y === "function") {
+        return approximateEqual(x, y);
+    }
+    if (typeof x === "function" || typeof y === "function") {
+        return false;
+    }
+    if (typeof x === "object" && typeof y === "object" && !!x && !!y) {
+        return (
+            x === y ||
+            (_.all(x, function (v, k) {
+                // @ts-expect-error - TS2536 - Type 'CollectionKey<T>' cannot be used to index type 'T'.
+                return approximateDeepEqual(y[k], v);
+            }) &&
+                _.all(y, function (v, k) {
+                    // @ts-expect-error - TS2536 - Type 'CollectionKey<T>' cannot be used to index type 'T'.
+                    return approximateDeepEqual(x[k], v);
+                }))
+        );
+    }
+    if ((typeof x === "object" && !!x) || (typeof y === "object" && !!y)) {
+        return false;
+    }
+    return approximateEqual(x, y);
+}
diff --git a/packages/perseus/src/widgets/expression/get-decimal-separator.ts b/packages/perseus-core/src/utils/get-decimal-separator.ts
similarity index 100%
rename from packages/perseus/src/widgets/expression/get-decimal-separator.ts
rename to packages/perseus-core/src/utils/get-decimal-separator.ts
diff --git a/packages/perseus-core/src/utils/get-matrix-size.ts b/packages/perseus-core/src/utils/get-matrix-size.ts
new file mode 100644
index 0000000000..1388852973
--- /dev/null
+++ b/packages/perseus-core/src/utils/get-matrix-size.ts
@@ -0,0 +1,27 @@
+import _ from "underscore";
+
+function getMatrixSize(matrix: ReadonlyArray<ReadonlyArray<number>>) {
+    const matrixSize = [1, 1];
+
+    // We need to find the widest row and tallest column to get the correct
+    // matrix size.
+    _(matrix).each((matrixRow, row) => {
+        let rowWidth = 0;
+        _(matrixRow).each((matrixCol, col) => {
+            if (matrixCol != null && matrixCol.toString().length) {
+                rowWidth = col + 1;
+            }
+        });
+
+        // Matrix width:
+        matrixSize[1] = Math.max(matrixSize[1], rowWidth);
+
+        // Matrix height:
+        if (rowWidth > 0) {
+            matrixSize[0] = Math.max(matrixSize[0], row + 1);
+        }
+    });
+    return matrixSize;
+}
+
+export default getMatrixSize;
diff --git a/packages/perseus/src/widgets/grapher/grapher-types.ts b/packages/perseus-core/src/utils/grapher-types.ts
similarity index 97%
rename from packages/perseus/src/widgets/grapher/grapher-types.ts
rename to packages/perseus-core/src/utils/grapher-types.ts
index c004902cbb..232f91831d 100644
--- a/packages/perseus/src/widgets/grapher/grapher-types.ts
+++ b/packages/perseus-core/src/utils/grapher-types.ts
@@ -1,4 +1,4 @@
-import type {Coord} from "@khanacademy/perseus";
+import type {Coord} from "../data-schema";
 
 export type Coords = [Coord, Coord];
 
diff --git a/packages/perseus-core/src/utils/grapher-util.ts b/packages/perseus-core/src/utils/grapher-util.ts
new file mode 100644
index 0000000000..072b9d8f58
--- /dev/null
+++ b/packages/perseus-core/src/utils/grapher-util.ts
@@ -0,0 +1,646 @@
+import _ from "underscore";
+
+import {approximateDeepEqual} from "./equality";
+
+import type {
+    LinearType,
+    QuadraticType,
+    SinusoidType,
+    TangentType,
+    ExponentialType,
+    LogarithmType,
+    AbsoluteValueType,
+    Coords,
+} from "./grapher-types";
+import type {Coord} from "../data-schema";
+
+export const MOVABLES = {
+    PLOT: "PLOT",
+    PARABOLA: "PARABOLA",
+    SINUSOID: "SINUSOID",
+};
+
+// TODO(charlie): These really need to go into a utility file as they're being
+// used by both interactive-graph and now grapher.
+function canonicalSineCoefficients(coeffs: any) {
+    // For a curve of the form f(x) = a * Sin(b * x - c) + d,
+    // this function ensures that a, b > 0, and c is its
+    // smallest possible positive value.
+    let amplitude = coeffs[0];
+    let angularFrequency = coeffs[1];
+    let phase = coeffs[2];
+    const verticalOffset = coeffs[3];
+
+    // Guarantee a > 0
+    if (amplitude < 0) {
+        amplitude *= -1;
+        angularFrequency *= -1;
+        phase *= -1;
+    }
+
+    const period = 2 * Math.PI;
+    // Guarantee b > 0
+    if (angularFrequency < 0) {
+        angularFrequency *= -1;
+        phase *= -1;
+        phase += period / 2;
+    }
+
+    // Guarantee c is smallest possible positive value
+    while (phase > 0) {
+        phase -= period;
+    }
+    while (phase < 0) {
+        phase += period;
+    }
+
+    return [amplitude, angularFrequency, phase, verticalOffset];
+}
+
+function canonicalTangentCoefficients(coeffs: any) {
+    // For a curve of the form f(x) = a * Tan(b * x - c) + d,
+    // this function ensures that a, b > 0, and c is its
+    // smallest possible positive value.
+    let amplitude = coeffs[0];
+    let angularFrequency = coeffs[1];
+    let phase = coeffs[2];
+    const verticalOffset = coeffs[3];
+
+    // Guarantee a > 0
+    if (amplitude < 0) {
+        amplitude *= -1;
+        angularFrequency *= -1;
+        phase *= -1;
+    }
+
+    const period = Math.PI;
+    // Guarantee b > 0
+    if (angularFrequency < 0) {
+        angularFrequency *= -1;
+        phase *= -1;
+        phase += period / 2;
+    }
+
+    // Guarantee c is smallest possible positive value
+    while (phase > 0) {
+        phase -= period;
+    }
+    while (phase < 0) {
+        phase += period;
+    }
+
+    return [amplitude, angularFrequency, phase, verticalOffset];
+}
+
+const PlotDefaults = {
+    areEqual: function (
+        coeffs1: ReadonlyArray<number>,
+        coeffs2: ReadonlyArray<number>,
+    ): boolean {
+        return approximateDeepEqual(coeffs1, coeffs2);
+    },
+    movable: MOVABLES.PLOT,
+    getPropsForCoeffs: function (coeffs: ReadonlyArray<number>): {fn: any} {
+        return {
+            // @ts-expect-error - TS2339 - Property 'getFunctionForCoeffs' does not exist on type '{ readonly areEqual: (coeffs1: any, coeffs2: any) => boolean; readonly Movable: any; readonly getPropsForCoeffs: (coeffs: any) => any; }'.
+            fn: _.partial(this.getFunctionForCoeffs, coeffs),
+        };
+    },
+} as const;
+
+const Linear: LinearType = _.extend({}, PlotDefaults, {
+    url: "https://ka-perseus-graphie.s3.amazonaws.com/67aaf581e6d9ef9038c10558a1f70ac21c11c9f8.png",
+
+    defaultCoords: [
+        [0.25, 0.75],
+        [0.75, 0.75],
+    ],
+
+    getCoefficients: function (
+        coords: Coords,
+    ): ReadonlyArray<number> | undefined {
+        const p1 = coords[0];
+        const p2 = coords[1];
+
+        const denom = p2[0] - p1[0];
+        const num = p2[1] - p1[1];
+
+        if (denom === 0) {
+            return;
+        }
+
+        const m = num / denom;
+        const b = p2[1] - m * p2[0];
+        return [m, b];
+    },
+
+    getFunctionForCoeffs: function (coeffs: ReadonlyArray<number>, x: number) {
+        const m = coeffs[0];
+        const b = coeffs[1];
+        return m * x + b;
+    },
+
+    getEquationString: function (coords: Coords) {
+        const coeffs: ReadonlyArray<number> = this.getCoefficients(coords);
+        const m: number = coeffs[0];
+        const b: number = coeffs[1];
+        return "y = " + m.toFixed(3) + "x + " + b.toFixed(3);
+    },
+});
+
+const Quadratic: QuadraticType = _.extend({}, PlotDefaults, {
+    url: "https://ka-perseus-graphie.s3.amazonaws.com/e23d36e6fc29ee37174e92c9daba2a66677128ab.png",
+
+    defaultCoords: [
+        [0.5, 0.5],
+        [0.75, 0.75],
+    ],
+    movable: MOVABLES.PARABOLA,
+
+    getCoefficients: function (coords: Coords): ReadonlyArray<number> {
+        const p1 = coords[0];
+        const p2 = coords[1];
+
+        // Parabola with vertex (h, k) has form: y = a * (h - k)^2 + k
+        const h = p1[0];
+        const k = p1[1];
+
+        // Use these to calculate familiar a, b, c
+        const a = (p2[1] - k) / ((p2[0] - h) * (p2[0] - h));
+        const b = -2 * h * a;
+        const c = a * h * h + k;
+
+        return [a, b, c];
+    },
+
+    getFunctionForCoeffs: function (
+        coeffs: ReadonlyArray<number>,
+        x: number,
+    ): number {
+        const a = coeffs[0];
+        const b = coeffs[1];
+        const c = coeffs[2];
+        return (a * x + b) * x + c;
+    },
+
+    getPropsForCoeffs: function (coeffs: ReadonlyArray<number>): {
+        a: number;
+        b: number;
+        c: number;
+    } {
+        return {
+            a: coeffs[0],
+            b: coeffs[1],
+            c: coeffs[2],
+        };
+    },
+
+    getEquationString: function (coords: Coords) {
+        const coeffs = this.getCoefficients(coords);
+        const a = coeffs[0];
+        const b = coeffs[1];
+        const c = coeffs[2];
+        return (
+            "y = " +
+            a.toFixed(3) +
+            "x^2 + " +
+            b.toFixed(3) +
+            "x + " +
+            c.toFixed(3)
+        );
+    },
+});
+
+const Sinusoid: SinusoidType = _.extend({}, PlotDefaults, {
+    url: "https://ka-perseus-graphie.s3.amazonaws.com/3d68e7718498475f53b206c2ab285626baf8857e.png",
+
+    defaultCoords: [
+        [0.5, 0.5],
+        [0.6, 0.6],
+    ],
+    movable: MOVABLES.SINUSOID,
+
+    getCoefficients: function (coords: Coords) {
+        const p1 = coords[0];
+        const p2 = coords[1];
+
+        const a = p2[1] - p1[1];
+        const b = Math.PI / (2 * (p2[0] - p1[0]));
+        const c = p1[0] * b;
+        const d = p1[1];
+
+        return [a, b, c, d];
+    },
+
+    getFunctionForCoeffs: function (coeffs: ReadonlyArray<number>, x: number) {
+        const a = coeffs[0];
+        const b = coeffs[1];
+        const c = coeffs[2];
+        const d = coeffs[3];
+        return a * Math.sin(b * x - c) + d;
+    },
+
+    getPropsForCoeffs: function (coeffs: ReadonlyArray<number>) {
+        return {
+            a: coeffs[0],
+            b: coeffs[1],
+            c: coeffs[2],
+            d: coeffs[3],
+        };
+    },
+
+    getEquationString: function (coords: Coords) {
+        const coeffs = this.getCoefficients(coords);
+        const a = coeffs[0];
+        const b = coeffs[1];
+        const c = coeffs[2];
+        const d = coeffs[3];
+        return (
+            "y = " +
+            a.toFixed(3) +
+            " sin(" +
+            b.toFixed(3) +
+            "x - " +
+            c.toFixed(3) +
+            ") + " +
+            d.toFixed(3)
+        );
+    },
+
+    areEqual: function (
+        coeffs1: ReadonlyArray<number>,
+        coeffs2: ReadonlyArray<number>,
+    ) {
+        return approximateDeepEqual(
+            canonicalSineCoefficients(coeffs1),
+            canonicalSineCoefficients(coeffs2),
+        );
+    },
+});
+
+const Tangent: TangentType = _.extend({}, PlotDefaults, {
+    url: "https://ka-perseus-graphie.s3.amazonaws.com/7db80d23c35214f98659fe1cf0765811c1bbfbba.png",
+
+    defaultCoords: [
+        [0.5, 0.5],
+        [0.75, 0.75],
+    ],
+
+    getCoefficients: function (coords: Coords) {
+        const p1 = coords[0];
+        const p2 = coords[1];
+
+        const a = p2[1] - p1[1];
+        const b = Math.PI / (4 * (p2[0] - p1[0]));
+        const c = p1[0] * b;
+        const d = p1[1];
+
+        return [a, b, c, d];
+    },
+
+    getFunctionForCoeffs: function (coeffs: ReadonlyArray<number>, x: number) {
+        const a = coeffs[0];
+        const b = coeffs[1];
+        const c = coeffs[2];
+        const d = coeffs[3];
+        return a * Math.tan(b * x - c) + d;
+    },
+
+    getEquationString: function (coords: Coords) {
+        const coeffs = this.getCoefficients(coords);
+        const a = coeffs[0];
+        const b = coeffs[1];
+        const c = coeffs[2];
+        const d = coeffs[3];
+        return (
+            "y = " +
+            a.toFixed(3) +
+            " sin(" +
+            b.toFixed(3) +
+            "x - " +
+            c.toFixed(3) +
+            ") + " +
+            d.toFixed(3)
+        );
+    },
+
+    areEqual: function (
+        coeffs1: ReadonlyArray<number>,
+        coeffs2: ReadonlyArray<number>,
+    ) {
+        return approximateDeepEqual(
+            canonicalTangentCoefficients(coeffs1),
+            canonicalTangentCoefficients(coeffs2),
+        );
+    },
+});
+
+const Exponential: ExponentialType = _.extend({}, PlotDefaults, {
+    url: "https://ka-perseus-graphie.s3.amazonaws.com/9cbfad55525e3ce755a31a631b074670a5dad611.png",
+
+    defaultCoords: [
+        [0.5, 0.55],
+        [0.75, 0.75],
+    ],
+
+    defaultAsymptote: [
+        [0, 0.5],
+        [1.0, 0.5],
+    ],
+
+    /**
+     * Add extra constraints for movement of the points or asymptote (below):
+     *   newCoord: [x, y]
+     *     The end position of the point or asymptote endpoint
+     *   oldCoord: [x, y]
+     *     The old position of the point or asymptote endpoint
+     *   coords:
+     *     An array of coordinates representing the proposed end configuration
+     *     of the plot coordinates.
+     *   asymptote:
+     *     An array of coordinates representing the proposed end configuration
+     *     of the asymptote.
+     *
+     * Return: either a coordinate (to be used as the resulting coordinate of
+     * the move) or a boolean, where `true` uses newCoord as the resulting
+     * coordinate, and `false` uses oldCoord as the resulting coordinate.
+     */
+    extraCoordConstraint: function (
+        newCoord: Coord,
+        oldCoord: Coord,
+        coords: Coords,
+        asymptote: Coords,
+        graph,
+    ) {
+        const y: number = asymptote[0][1];
+        return _.all(coords, (coord) => coord[1] !== y);
+    },
+
+    extraAsymptoteConstraint: function (
+        newCoord: Coord,
+        oldCoord: Coord,
+        coords: Coords,
+        asymptote: Coords,
+        graph,
+    ): Coord {
+        const y = newCoord[1];
+        const isValid =
+            _.all(coords, (coord) => coord[1] > y) ||
+            _.all(coords, (coord) => coord[1] < y);
+
+        if (isValid) {
+            return [oldCoord[0], y];
+        }
+        // Snap the asymptote as close as possible, i.e., if the user moves
+        // the mouse really quickly into an invalid region
+        const oldY = oldCoord[1];
+        const wasBelow = _.all(coords, (coord) => coord[1] > oldY);
+        if (wasBelow) {
+            const bottomMost = _.min(_.map(coords, (coord) => coord[1]));
+            return [oldCoord[0], bottomMost - graph.snapStep[1]];
+        }
+        const topMost = _.max(_.map(coords, (coord) => coord[1]));
+        return [oldCoord[0], topMost + graph.snapStep[1]];
+    },
+
+    allowReflectOverAsymptote: true,
+
+    getCoefficients: function (
+        coords: Coords,
+        asymptote: Coords,
+    ): ReadonlyArray<number> {
+        const p1 = coords[0];
+        const p2 = coords[1];
+
+        const c = asymptote[0][1];
+        const b = Math.log((p1[1] - c) / (p2[1] - c)) / (p1[0] - p2[0]);
+        const a = (p1[1] - c) / Math.exp(b * p1[0]);
+        return [a, b, c];
+    },
+
+    getFunctionForCoeffs: function (
+        coeffs: ReadonlyArray<number>,
+        x: number,
+    ): number {
+        const a = coeffs[0];
+        const b = coeffs[1];
+        const c = coeffs[2];
+        return a * Math.exp(b * x) + c;
+    },
+
+    getEquationString: function (coords: Coords, asymptote: Coords) {
+        if (!asymptote) {
+            return null;
+        }
+        const coeffs = this.getCoefficients(coords, asymptote);
+        const a = coeffs[0];
+        const b = coeffs[1];
+        const c = coeffs[2];
+        return (
+            "y = " +
+            a.toFixed(3) +
+            "e^(" +
+            b.toFixed(3) +
+            "x) + " +
+            c.toFixed(3)
+        );
+    },
+});
+
+const Logarithm: LogarithmType = _.extend({}, PlotDefaults, {
+    url: "https://ka-perseus-graphie.s3.amazonaws.com/f6491e99d34af34d924bfe0231728ad912068dc3.png",
+
+    defaultCoords: [
+        [0.55, 0.5],
+        [0.75, 0.75],
+    ],
+
+    defaultAsymptote: [
+        [0.5, 0],
+        [0.5, 1.0],
+    ],
+
+    extraCoordConstraint: function (
+        newCoord: Coord,
+        oldCoord: Coord,
+        coords: Coord,
+        asymptote: Coords,
+        graph,
+    ) {
+        const x = asymptote[0][0];
+        return (
+            _.all(coords, (coord) => coord[0] !== x) &&
+            coords[0][1] !== coords[1][1]
+        );
+    },
+
+    extraAsymptoteConstraint: function (
+        newCoord: Coord,
+        oldCoord: Coord,
+        coords: Coords,
+        asymptote: Coords,
+        graph,
+    ): ReadonlyArray<number> {
+        const x = newCoord[0];
+        const isValid =
+            _.all(coords, (coord) => coord[0] > x) ||
+            _.all(coords, (coord) => coord[0] < x);
+
+        if (isValid) {
+            return [x, oldCoord[1]];
+        }
+        // Snap the asymptote as close as possible, i.e., if the user moves
+        // the mouse really quickly into an invalid region
+        const oldX = oldCoord[0];
+        const wasLeft = _.all(coords, (coord) => coord[0] > oldX);
+        if (wasLeft) {
+            const leftMost = _.min(_.map(coords, (coord) => coord[0]));
+            return [leftMost - graph.snapStep[0], oldCoord[1]];
+        }
+        const rightMost = _.max(_.map(coords, (coord) => coord[0]));
+        return [rightMost + graph.snapStep[0], oldCoord[1]];
+    },
+
+    allowReflectOverAsymptote: true,
+
+    getCoefficients: function (
+        coords: Coords,
+        asymptote: Coords,
+    ): ReadonlyArray<number> | undefined {
+        // It's easiest to calculate the logarithm's coefficients by thinking
+        // about it as the inverse of the exponential, so we flip x and y and
+        // perform some algebra on the coefficients. This also unifies the
+        // logic between the two 'models'.
+        const flip = (coord: Coord): Coord => [coord[1], coord[0]];
+        const inverseCoeffs = Exponential.getCoefficients(
+            _.map(coords, flip) as Coords,
+            _.map(asymptote, flip) as Coords,
+        );
+        if (inverseCoeffs) {
+            const c = -inverseCoeffs[2] / inverseCoeffs[0];
+            const b = 1 / inverseCoeffs[0];
+            const a = 1 / inverseCoeffs[1];
+            return [a, b, c];
+        }
+    },
+
+    getFunctionForCoeffs: function (
+        coeffs: ReadonlyArray<number>,
+        x: number,
+        asymptote: Coords,
+    ) {
+        const a = coeffs[0];
+        const b = coeffs[1];
+        const c = coeffs[2];
+        return a * Math.log(b * x + c);
+    },
+
+    getEquationString: function (coords: Coords, asymptote: Coords) {
+        if (!asymptote) {
+            return null;
+        }
+        const coeffs: ReadonlyArray<number> = this.getCoefficients(
+            coords,
+            asymptote,
+        );
+        const a = coeffs[0];
+        const b = coeffs[1];
+        const c = coeffs[2];
+        return (
+            "y = ln(" +
+            a.toFixed(3) +
+            "x + " +
+            b.toFixed(3) +
+            ") + " +
+            c.toFixed(3)
+        );
+    },
+});
+
+const AbsoluteValue: AbsoluteValueType = _.extend({}, PlotDefaults, {
+    url: "https://ka-perseus-graphie.s3.amazonaws.com/8256a630175a0cb1d11de223d6de0266daf98721.png",
+
+    defaultCoords: [
+        [0.5, 0.5],
+        [0.75, 0.75],
+    ],
+
+    getCoefficients: function (
+        coords: Coords,
+    ): ReadonlyArray<number> | undefined {
+        const p1 = coords[0];
+        const p2 = coords[1];
+
+        const denom = p2[0] - p1[0];
+        const num = p2[1] - p1[1];
+
+        if (denom === 0) {
+            return;
+        }
+
+        let m = Math.abs(num / denom);
+        if (p2[1] < p1[1]) {
+            m *= -1;
+        }
+        const horizontalOffset = p1[0];
+        const verticalOffset = p1[1];
+
+        return [m, horizontalOffset, verticalOffset];
+    },
+
+    getFunctionForCoeffs: function (coeffs: ReadonlyArray<number>, x: number) {
+        const m = coeffs[0];
+        const horizontalOffset = coeffs[1];
+        const verticalOffset = coeffs[2];
+        return m * Math.abs(x - horizontalOffset) + verticalOffset;
+    },
+
+    getEquationString: function (coords: Coords) {
+        const coeffs: ReadonlyArray<number> = this.getCoefficients(coords);
+        const m = coeffs[0];
+        const horizontalOffset = coeffs[1];
+        const verticalOffset = coeffs[2];
+        return (
+            "y = " +
+            m.toFixed(3) +
+            "| x - " +
+            horizontalOffset.toFixed(3) +
+            "| + " +
+            verticalOffset.toFixed(3)
+        );
+    },
+});
+
+/* Utility functions for dealing with graphing interfaces. */
+const functionTypeMapping = {
+    linear: Linear,
+    quadratic: Quadratic,
+    sinusoid: Sinusoid,
+    tangent: Tangent,
+    exponential: Exponential,
+    logarithm: Logarithm,
+    absolute_value: AbsoluteValue,
+} as const;
+
+export const allTypes: any = _.keys(functionTypeMapping);
+
+export type FunctionTypeMappingKeys = keyof typeof functionTypeMapping;
+
+type ConditionalGraderType<T extends FunctionTypeMappingKeys> =
+    // prettier-ignore
+    T extends "linear" ? LinearType
+    : T extends "quadratic" ? QuadraticType
+    : T extends "sinusoid" ? SinusoidType
+    : T extends "tangent" ? TangentType
+    : T extends "exponential" ? ExponentialType
+    : T extends "logarithm" ? LogarithmType
+    : T extends "absolute_value" ? AbsoluteValueType
+    : never;
+
+export function functionForType<T extends FunctionTypeMappingKeys>(
+    type: T,
+): ConditionalGraderType<T> {
+    // @ts-expect-error: TypeScript doesn't know how to use deal with generics
+    // and conditional types in this way.
+    return functionTypeMapping[type];
+}
diff --git a/packages/perseus-editor/package.json b/packages/perseus-editor/package.json
index 4bdfc90859..5f2eee2c6f 100644
--- a/packages/perseus-editor/package.json
+++ b/packages/perseus-editor/package.json
@@ -41,6 +41,7 @@
         "@khanacademy/math-input": "^22.2.0",
         "@khanacademy/perseus": "^50.1.0",
         "@khanacademy/perseus-core": "3.1.0",
+        "@khanacademy/perseus-score": "^1.0.0",
         "@khanacademy/pure-markdown": "^0.3.21",
         "mafs": "^0.19.0"
     },
diff --git a/packages/perseus-editor/src/components/graph-settings.tsx b/packages/perseus-editor/src/components/graph-settings.tsx
index 4ae48751f5..4f551f628e 100644
--- a/packages/perseus-editor/src/components/graph-settings.tsx
+++ b/packages/perseus-editor/src/components/graph-settings.tsx
@@ -15,8 +15,7 @@ import * as React from "react";
 import ReactDOM from "react-dom";
 import _ from "underscore";
 
-import type {Coords} from "@khanacademy/perseus";
-import type {MarkingsType} from "@khanacademy/perseus-core";
+import type {Coords, MarkingsType} from "@khanacademy/perseus-core";
 
 const {ButtonGroup, InfoTip, RangeInput} = components;
 
diff --git a/packages/perseus-editor/src/widgets/__stories__/label-image-editor.stories.tsx b/packages/perseus-editor/src/widgets/__stories__/label-image-editor.stories.tsx
index 3bd0773691..f592fd329b 100644
--- a/packages/perseus-editor/src/widgets/__stories__/label-image-editor.stories.tsx
+++ b/packages/perseus-editor/src/widgets/__stories__/label-image-editor.stories.tsx
@@ -4,7 +4,7 @@ import * as React from "react";
 
 import LabelImageEditor from "../label-image-editor";
 
-import type {MarkerType} from "@khanacademy/perseus";
+import type {MarkerType} from "@khanacademy/perseus-core";
 
 type StoryArgs = Record<any, any>;
 
diff --git a/packages/perseus-editor/src/widgets/grapher-editor.tsx b/packages/perseus-editor/src/widgets/grapher-editor.tsx
index f2056e96f5..9b2d1631bb 100644
--- a/packages/perseus-editor/src/widgets/grapher-editor.tsx
+++ b/packages/perseus-editor/src/widgets/grapher-editor.tsx
@@ -7,6 +7,7 @@ import {
     containerSizeClass,
     getInteractiveBoxFromSizeClass,
 } from "@khanacademy/perseus";
+import {GrapherUtil as CoreGrapherUtil} from "@khanacademy/perseus-core";
 import * as React from "react";
 import _ from "underscore";
 
@@ -16,7 +17,6 @@ const {InfoTip, MultiButtonGroup} = components;
 const Grapher = GrapherWidget.widget;
 const {
     DEFAULT_GRAPHER_PROPS,
-    allTypes,
     chooseType,
     defaultPlotProps,
     getEquationString,
@@ -141,7 +141,7 @@ class GrapherEditor extends React.Component<Props> {
                     <MultiButtonGroup
                         allowEmpty={false}
                         values={this.props.availableTypes}
-                        buttons={_.map(allTypes, typeToButton)}
+                        buttons={_.map(CoreGrapherUtil.allTypes, typeToButton)}
                         onChange={this.handleAvailableTypesChange}
                     />
                 </div>
diff --git a/packages/perseus-editor/src/widgets/input-number-editor.tsx b/packages/perseus-editor/src/widgets/input-number-editor.tsx
index af93315324..9095e7f2e7 100644
--- a/packages/perseus-editor/src/widgets/input-number-editor.tsx
+++ b/packages/perseus-editor/src/widgets/input-number-editor.tsx
@@ -1,4 +1,5 @@
 import {components, PerseusI18nContext, Util} from "@khanacademy/perseus";
+import {inputNumberAnswerTypes} from "@khanacademy/perseus-score";
 import * as React from "react";
 import _ from "underscore";
 
@@ -9,41 +10,6 @@ import type {PerseusInputNumberWidgetOptions} from "@khanacademy/perseus-core";
 
 const {InfoTip} = components;
 
-const answerTypes = {
-    number: {
-        name: "Numbers",
-        forms: "integer, decimal, proper, improper, mixed",
-    },
-    decimal: {
-        name: "Decimals",
-        forms: "decimal",
-    },
-    integer: {
-        name: "Integers",
-        forms: "integer",
-    },
-    rational: {
-        name: "Fractions and mixed numbers",
-        forms: "integer, proper, improper, mixed",
-    },
-    improper: {
-        name: "Improper numbers (no mixed)",
-        forms: "integer, proper, improper",
-    },
-    mixed: {
-        name: "Mixed numbers (no improper)",
-        forms: "integer, proper, mixed",
-    },
-    percent: {
-        name: "Numbers or percents",
-        forms: "integer, decimal, proper, improper, mixed, percent",
-    },
-    pi: {
-        name: "Numbers with pi",
-        forms: "pi",
-    },
-} as const;
-
 type Props = {
     value: number;
     simplify: PerseusInputNumberWidgetOptions["simplify"];
@@ -121,7 +87,7 @@ class InputNumberEditor extends React.Component<Props> {
 
     render(): React.ReactNode {
         const answerTypeOptions = _.map(
-            answerTypes,
+            inputNumberAnswerTypes,
             function (v, k) {
                 return (
                     <option value={k} key={k}>
diff --git a/packages/perseus-editor/src/widgets/interaction-editor/interaction-editor.tsx b/packages/perseus-editor/src/widgets/interaction-editor/interaction-editor.tsx
index 1b6f03ef32..c35e9e6c6a 100644
--- a/packages/perseus-editor/src/widgets/interaction-editor/interaction-editor.tsx
+++ b/packages/perseus-editor/src/widgets/interaction-editor/interaction-editor.tsx
@@ -21,8 +21,7 @@ import ParametricEditor from "./parametric-editor";
 import PointEditor from "./point-editor";
 import RectangleEditor from "./rectangle-editor";
 
-import type {Coords} from "@khanacademy/perseus";
-import type {MarkingsType} from "@khanacademy/perseus-core";
+import type {Coords, MarkingsType} from "@khanacademy/perseus-core";
 
 const {getDependencies} = Dependencies;
 const {unescapeMathMode} = Util;
diff --git a/packages/perseus-editor/src/widgets/interactive-graph-editor/start-coords/util.ts b/packages/perseus-editor/src/widgets/interactive-graph-editor/start-coords/util.ts
index 8ce80a5df8..99dc26d410 100644
--- a/packages/perseus-editor/src/widgets/interactive-graph-editor/start-coords/util.ts
+++ b/packages/perseus-editor/src/widgets/interactive-graph-editor/start-coords/util.ts
@@ -1,4 +1,4 @@
-import {vector as kvector} from "@khanacademy/kmath";
+import {angles, vector as kvector} from "@khanacademy/kmath";
 import {
     getAngleCoords,
     getCircleCoords,
@@ -9,13 +9,14 @@ import {
     getQuadraticCoords,
     getSegmentCoords,
     getSinusoidCoords,
-    getClockwiseAngle,
 } from "@khanacademy/perseus";
 import {UnreachableCaseError} from "@khanacademy/wonder-stuff-core";
 
 import type {StartCoords} from "./types";
 import type {Range, PerseusGraphType, Coord} from "@khanacademy/perseus-core";
 
+const {getClockwiseAngle} = angles;
+
 export function getStartCoords(graph: PerseusGraphType): StartCoords {
     if ("startCoords" in graph) {
         return graph.startCoords;
diff --git a/packages/perseus-editor/src/widgets/label-image-editor.tsx b/packages/perseus-editor/src/widgets/label-image-editor.tsx
index ba4c5662b9..19863df233 100644
--- a/packages/perseus-editor/src/widgets/label-image-editor.tsx
+++ b/packages/perseus-editor/src/widgets/label-image-editor.tsx
@@ -17,7 +17,7 @@ import Behavior from "./label-image/behavior";
 import QuestionMarkers from "./label-image/question-markers";
 import SelectImage from "./label-image/select-image";
 
-import type {MarkerType} from "@khanacademy/perseus";
+import type {MarkerType} from "@khanacademy/perseus-core";
 
 type Props = {
     // List of answer choices to label question image with.
diff --git a/packages/perseus-editor/src/widgets/label-image/__stories__/question-markers.stories.tsx b/packages/perseus-editor/src/widgets/label-image/__stories__/question-markers.stories.tsx
index 524e9f05c3..e61699d261 100644
--- a/packages/perseus-editor/src/widgets/label-image/__stories__/question-markers.stories.tsx
+++ b/packages/perseus-editor/src/widgets/label-image/__stories__/question-markers.stories.tsx
@@ -3,7 +3,7 @@ import * as React from "react";
 
 import QuestionMarkers from "../question-markers";
 
-import type {MarkerType} from "@khanacademy/perseus";
+import type {MarkerType} from "@khanacademy/perseus-core";
 
 type StoryArgs = Record<any, any>;
 
diff --git a/packages/perseus-editor/src/widgets/label-image/marker.tsx b/packages/perseus-editor/src/widgets/label-image/marker.tsx
index ba5cba5652..654df23c72 100644
--- a/packages/perseus-editor/src/widgets/label-image/marker.tsx
+++ b/packages/perseus-editor/src/widgets/label-image/marker.tsx
@@ -14,7 +14,7 @@ import Option, {OptionGroup} from "../../components/dropdown-option";
 import FormWrappedTextField from "../../components/form-wrapped-text-field";
 import {gray17, gray85, gray98} from "../../styles/global-colors";
 
-import type {MarkerType} from "@khanacademy/perseus";
+import type {MarkerType} from "@khanacademy/perseus-core";
 
 type Props = MarkerType & {
     // The list of possible answer choices.
diff --git a/packages/perseus-editor/src/widgets/label-image/question-markers.tsx b/packages/perseus-editor/src/widgets/label-image/question-markers.tsx
index 6ccc2a772f..650b8abb71 100644
--- a/packages/perseus-editor/src/widgets/label-image/question-markers.tsx
+++ b/packages/perseus-editor/src/widgets/label-image/question-markers.tsx
@@ -11,7 +11,7 @@ import {gray17, gray68} from "../../styles/global-colors";
 
 import Marker from "./marker";
 
-import type {MarkerType} from "@khanacademy/perseus";
+import type {MarkerType} from "@khanacademy/perseus-core";
 
 type Props = {
     // The list of possible answers in a specific order.
diff --git a/packages/perseus-editor/src/widgets/matrix-editor.tsx b/packages/perseus-editor/src/widgets/matrix-editor.tsx
index 2f9321165e..48e191ab73 100644
--- a/packages/perseus-editor/src/widgets/matrix-editor.tsx
+++ b/packages/perseus-editor/src/widgets/matrix-editor.tsx
@@ -4,6 +4,7 @@ import {
     EditorJsonify,
     MatrixWidget,
 } from "@khanacademy/perseus";
+import {getMatrixSize} from "@khanacademy/perseus-core";
 import PropTypes from "prop-types";
 import * as React from "react";
 import _ from "underscore";
@@ -17,30 +18,6 @@ const Matrix = MatrixWidget.widget;
 // have to cap it at some point.
 const MAX_BOARD_SIZE = 6;
 
-const getMatrixSize = function (matrix: any) {
-    const matrixSize = [1, 1];
-
-    // We need to find the widest row and tallest column to get the correct
-    // matrix size.
-    _(matrix).each((matrixRow, row) => {
-        let rowWidth = 0;
-        _(matrixRow).each((matrixCol, col) => {
-            if (matrixCol != null && matrixCol.toString().length) {
-                rowWidth = col + 1;
-            }
-        });
-
-        // Matrix width:
-        matrixSize[1] = Math.max(matrixSize[1], rowWidth);
-
-        // Matrix height:
-        if (rowWidth > 0) {
-            matrixSize[0] = Math.max(matrixSize[0], row + 1);
-        }
-    });
-    return matrixSize;
-};
-
 type Props = any;
 
 class MatrixEditor extends React.Component<Props> {
diff --git a/packages/perseus-score/src/error-codes.ts b/packages/perseus-score/src/error-codes.ts
index b71e9aa29e..2fe56ba195 100644
--- a/packages/perseus-score/src/error-codes.ts
+++ b/packages/perseus-score/src/error-codes.ts
@@ -5,6 +5,10 @@ const EXTRA_SYMBOLS_ERROR = "EXTRA_SYMBOLS_ERROR";
 const WRONG_CASE_ERROR = "WRONG_CASE_ERROR";
 const WRONG_LETTER_ERROR = "WRONG_LETTER_ERROR";
 const MULTIPLICATION_SIGN_ERROR = "MULTIPLICATION_SIGN_ERROR";
+const INVALID_SELECTION_ERROR = "INVALID_SELECTION_ERROR";
+const CHOOSE_CORRECT_NUM_ERROR = "CHOOSE_CORRECT_NUM_ERROR";
+const NOT_NONE_ABOVE_ERROR = "NOT_NONE_ABOVE_ERROR";
+const FILL_ALL_CELLS_ERROR = "FILL_ALL_CELLS_ERROR";
 
 const ErrorCodes = {
     MISSING_PERCENT_ERROR,
@@ -14,6 +18,10 @@ const ErrorCodes = {
     WRONG_CASE_ERROR,
     WRONG_LETTER_ERROR,
     MULTIPLICATION_SIGN_ERROR,
+    INVALID_SELECTION_ERROR,
+    CHOOSE_CORRECT_NUM_ERROR,
+    NOT_NONE_ABOVE_ERROR,
+    FILL_ALL_CELLS_ERROR,
 };
 
 export default ErrorCodes;
diff --git a/packages/perseus-score/src/index.ts b/packages/perseus-score/src/index.ts
index 44ff514dd7..4378337722 100644
--- a/packages/perseus-score/src/index.ts
+++ b/packages/perseus-score/src/index.ts
@@ -1,3 +1,28 @@
 export {default as KhanAnswerTypes} from "./util/answer-types";
 export type {Score} from "./util/answer-types";
 export {default as ErrorCodes} from "./error-codes";
+export type * from "./validation.types";
+export {default as scoreCategorizer} from "./widgets/categorizer/score-categorizer";
+export {default as scoreCSProgram} from "./widgets/cs-program/score-cs-program";
+export {default as scoreDropdown} from "./widgets/dropdown/score-dropdown";
+export {default as scoreExpression} from "./widgets/expression/score-expression";
+export {default as scoreGrapher} from "./widgets/grapher/score-grapher";
+export {default as scoreIframe} from "./widgets/iframe/score-iframe";
+export {default as scoreInteractiveGraph} from "./widgets/interactive-graph/score-interactive-graph";
+export {
+    default as scoreLabelImage,
+    scoreLabelImageMarker,
+} from "./widgets/label-image/score-label-image";
+export {default as scoreMatcher} from "./widgets/matcher/score-matcher";
+export {default as scoreMatrix} from "./widgets/matrix/score-matrix";
+export {default as scoreNumberLine} from "./widgets/number-line/score-number-line";
+export {default as scoreNumericInput} from "./widgets/numeric-input/score-numeric-input";
+export {default as scoreOrderer} from "./widgets/orderer/score-orderer";
+export {default as scorePlotter} from "./widgets/plotter/score-plotter";
+export {default as scoreRadio} from "./widgets/radio/score-radio";
+export {default as scoreSorter} from "./widgets/sorter/score-sorter";
+export {default as scoreTable} from "./widgets/table/score-table";
+export {
+    default as scoreInputNumber,
+    inputNumberAnswerTypes,
+} from "./widgets/input-number/score-input-number";
diff --git a/packages/perseus/src/__tests__/tex-wrangler.test.ts b/packages/perseus-score/src/util/tex-wrangler.test.ts
similarity index 96%
rename from packages/perseus/src/__tests__/tex-wrangler.test.ts
rename to packages/perseus-score/src/util/tex-wrangler.test.ts
index c0deb7d158..ae426a1a36 100644
--- a/packages/perseus/src/__tests__/tex-wrangler.test.ts
+++ b/packages/perseus-score/src/util/tex-wrangler.test.ts
@@ -1,6 +1,4 @@
-import TexWrangler from "../tex-wrangler";
-
-const {parseTex, modifyTex} = TexWrangler;
+import {parseTex, modifyTex} from "./tex-wrangler";
 
 const whitespaceRegex = /\s/g;
 
diff --git a/packages/perseus/src/tex-wrangler.ts b/packages/perseus-score/src/util/tex-wrangler.ts
similarity index 97%
rename from packages/perseus/src/tex-wrangler.ts
rename to packages/perseus-score/src/util/tex-wrangler.ts
index 61af64616e..f2329157f5 100644
--- a/packages/perseus/src/tex-wrangler.ts
+++ b/packages/perseus-score/src/util/tex-wrangler.ts
@@ -140,7 +140,7 @@ function walkTex(
  * expression will have its innermost fractions stubbed out with \fracs
  * (as opposed to \dfracs). All other content will remain untouched.
  */
-function modifyTex(tex: string): string {
+export function modifyTex(tex: string): string {
     function isNestedFraction(tex: string) {
         return tex.indexOf("\\frac") > -1 || tex.indexOf("\\dfrac") > -1;
     }
@@ -168,15 +168,10 @@ function modifyTex(tex: string): string {
  *
  * Backslash-escapes are removed with a simple search-and-replace.
  */
-function parseTex(tex: string): string {
+export function parseTex(tex: string): string {
     const handler = function (exp1: string, exp2: string) {
         return exp1 + "/" + exp2;
     };
     const texWithoutFracs = walkTex(tex, handler);
     return texWithoutFracs.replace("\\%", "%");
 }
-
-export default {
-    parseTex,
-    modifyTex,
-};
diff --git a/packages/perseus/src/validation.types.ts b/packages/perseus-score/src/validation.types.ts
similarity index 95%
rename from packages/perseus/src/validation.types.ts
rename to packages/perseus-score/src/validation.types.ts
index 0863377c03..45394e4b52 100644
--- a/packages/perseus/src/validation.types.ts
+++ b/packages/perseus-score/src/validation.types.ts
@@ -28,8 +28,6 @@
  * ```
  */
 
-import type {InteractiveMarkerType} from "./widgets/label-image/types";
-import type {Relationship} from "./widgets/number-line/number-line";
 import type {
     GrapherAnswerTypes,
     PerseusDropdownChoice,
@@ -44,8 +42,25 @@ import type {
     PerseusOrdererWidgetOptions,
     PerseusRadioChoice,
     PerseusGraphCorrectType,
+    InteractiveMarkerType,
+    Relationship,
 } from "@khanacademy/perseus-core";
 
+export type PerseusScore =
+    | {
+          type: "invalid";
+          message?: string | null | undefined;
+          suppressAlmostThere?: boolean | null | undefined;
+      }
+    | {
+          type: "points";
+          earned: number;
+          total: number;
+          message?: string | null | undefined;
+      };
+
+export type ValidationResult = Extract<PerseusScore, {type: "invalid"}> | null;
+
 export type UserInputStatus = "correct" | "incorrect" | "incomplete";
 
 export type PerseusCategorizerScoringData = {
diff --git a/packages/perseus/src/widgets/categorizer/score-categorizer.test.ts b/packages/perseus-score/src/widgets/categorizer/score-categorizer.test.ts
similarity index 81%
rename from packages/perseus/src/widgets/categorizer/score-categorizer.test.ts
rename to packages/perseus-score/src/widgets/categorizer/score-categorizer.test.ts
index 7a8c0192f9..a1e6131e1c 100644
--- a/packages/perseus/src/widgets/categorizer/score-categorizer.test.ts
+++ b/packages/perseus-score/src/widgets/categorizer/score-categorizer.test.ts
@@ -1,5 +1,3 @@
-import {mockStrings} from "../../strings";
-
 import scoreCategorizer from "./score-categorizer";
 
 import type {PerseusCategorizerScoringData} from "../../validation.types";
@@ -14,7 +12,7 @@ describe("scoreCategorizer", () => {
         const userInput = {
             values: [1, 3],
         } as const;
-        const score = scoreCategorizer(userInput, scoringData, mockStrings);
+        const score = scoreCategorizer(userInput, scoringData);
 
         expect(score).toHaveBeenAnsweredCorrectly();
     });
@@ -28,7 +26,7 @@ describe("scoreCategorizer", () => {
         const userInput = {
             values: [2, 3],
         } as const;
-        const score = scoreCategorizer(userInput, scoringData, mockStrings);
+        const score = scoreCategorizer(userInput, scoringData);
 
         expect(score).toHaveBeenAnsweredIncorrectly();
     });
diff --git a/packages/perseus/src/widgets/categorizer/score-categorizer.ts b/packages/perseus-score/src/widgets/categorizer/score-categorizer.ts
similarity index 74%
rename from packages/perseus/src/widgets/categorizer/score-categorizer.ts
rename to packages/perseus-score/src/widgets/categorizer/score-categorizer.ts
index b44d0f1465..8906353375 100644
--- a/packages/perseus/src/widgets/categorizer/score-categorizer.ts
+++ b/packages/perseus-score/src/widgets/categorizer/score-categorizer.ts
@@ -1,22 +1,16 @@
 import validateCategorizer from "./validate-categorizer";
 
-import type {PerseusStrings} from "../../strings";
-import type {PerseusScore} from "../../types";
 import type {
     PerseusCategorizerScoringData,
     PerseusCategorizerUserInput,
+    PerseusScore,
 } from "../../validation.types";
 
 function scoreCategorizer(
     userInput: PerseusCategorizerUserInput,
     scoringData: PerseusCategorizerScoringData,
-    strings: PerseusStrings,
 ): PerseusScore {
-    const validationError = validateCategorizer(
-        userInput,
-        scoringData,
-        strings,
-    );
+    const validationError = validateCategorizer(userInput, scoringData);
     if (validationError) {
         return validationError;
     }
diff --git a/packages/perseus/src/widgets/categorizer/validate-categorizer.test.ts b/packages/perseus-score/src/widgets/categorizer/validate-categorizer.test.ts
similarity index 57%
rename from packages/perseus/src/widgets/categorizer/validate-categorizer.test.ts
rename to packages/perseus-score/src/widgets/categorizer/validate-categorizer.test.ts
index fc8ce058ba..a8cf67aaa4 100644
--- a/packages/perseus/src/widgets/categorizer/validate-categorizer.test.ts
+++ b/packages/perseus-score/src/widgets/categorizer/validate-categorizer.test.ts
@@ -1,8 +1,6 @@
-import {mockStrings} from "../../strings";
-
 import validateCategorizer from "./validate-categorizer";
 
-import type {PerseusCategorizerValidationData} from "../../validation.types";
+import type {PerseusCategorizerValidationData} from "@khanacademy/perseus-score";
 
 describe("validateCategorizer", () => {
     it("tells the learner its not complete if not selected", () => {
@@ -13,15 +11,9 @@ describe("validateCategorizer", () => {
         const userInput = {
             values: [2],
         } as const;
-        const score = validateCategorizer(
-            userInput,
-            validationData,
-            mockStrings,
-        );
+        const score = validateCategorizer(userInput, validationData);
 
-        expect(score).toHaveInvalidInput(
-            "Make sure you select something for every row.",
-        );
+        expect(score).toHaveInvalidInput("INVALID_SELECTION_ERROR");
     });
 
     it("returns null if the userInput is valid", () => {
@@ -32,11 +24,7 @@ describe("validateCategorizer", () => {
         const userInput = {
             values: [2, 4],
         } as const;
-        const score = validateCategorizer(
-            userInput,
-            validationData,
-            mockStrings,
-        );
+        const score = validateCategorizer(userInput, validationData);
 
         expect(score).toBeNull();
     });
diff --git a/packages/perseus/src/widgets/categorizer/validate-categorizer.ts b/packages/perseus-score/src/widgets/categorizer/validate-categorizer.ts
similarity index 80%
rename from packages/perseus/src/widgets/categorizer/validate-categorizer.ts
rename to packages/perseus-score/src/widgets/categorizer/validate-categorizer.ts
index 1dc029e0cc..450dbe9784 100644
--- a/packages/perseus/src/widgets/categorizer/validate-categorizer.ts
+++ b/packages/perseus-score/src/widgets/categorizer/validate-categorizer.ts
@@ -1,9 +1,10 @@
-import type {PerseusStrings} from "../../strings";
-import type {ValidationResult} from "../../types";
+import {ErrorCodes} from "@khanacademy/perseus-score";
+
 import type {
+    ValidationResult,
     PerseusCategorizerUserInput,
     PerseusCategorizerValidationData,
-} from "../../validation.types";
+} from "@khanacademy/perseus-score";
 
 /**
  * Checks userInput from the categorizer widget to see if the user has selected
@@ -16,7 +17,6 @@ import type {
 function validateCategorizer(
     userInput: PerseusCategorizerUserInput,
     validationData: PerseusCategorizerValidationData,
-    strings: PerseusStrings,
 ): ValidationResult {
     const incomplete = validationData.items.some(
         (_, i) => userInput.values[i] == null,
@@ -25,7 +25,7 @@ function validateCategorizer(
     if (incomplete) {
         return {
             type: "invalid",
-            message: strings.invalidSelection,
+            message: ErrorCodes.INVALID_SELECTION_ERROR,
         };
     }
     return null;
diff --git a/packages/perseus/src/widgets/cs-program/score-cs-program.test.ts b/packages/perseus-score/src/widgets/cs-program/score-cs-program.test.ts
similarity index 100%
rename from packages/perseus/src/widgets/cs-program/score-cs-program.test.ts
rename to packages/perseus-score/src/widgets/cs-program/score-cs-program.test.ts
diff --git a/packages/perseus/src/widgets/cs-program/score-cs-program.ts b/packages/perseus-score/src/widgets/cs-program/score-cs-program.ts
similarity index 69%
rename from packages/perseus/src/widgets/cs-program/score-cs-program.ts
rename to packages/perseus-score/src/widgets/cs-program/score-cs-program.ts
index 664aed1d81..a26866b7d0 100644
--- a/packages/perseus/src/widgets/cs-program/score-cs-program.ts
+++ b/packages/perseus-score/src/widgets/cs-program/score-cs-program.ts
@@ -1,9 +1,12 @@
-import type {PerseusScore} from "../../types";
-import type {PerseusCSProgramUserInput} from "../../validation.types";
+import type {
+    PerseusCSProgramUserInput,
+    PerseusScore,
+} from "../../validation.types";
 
+// TODO: merge this with scoreIframe, it's the same code
 function scoreCSProgram(state: PerseusCSProgramUserInput): PerseusScore {
-    // The iframe can tell us whether it's correct or incorrect,
-    //  and pass an optional message
+    // The CS program can tell us whether it's correct or incorrect,
+    // and pass an optional message
     if (state.status === "correct") {
         return {
             type: "points",
diff --git a/packages/perseus/src/widgets/dropdown/score-dropdown.test.ts b/packages/perseus-score/src/widgets/dropdown/score-dropdown.test.ts
similarity index 61%
rename from packages/perseus/src/widgets/dropdown/score-dropdown.test.ts
rename to packages/perseus-score/src/widgets/dropdown/score-dropdown.test.ts
index e90d333cc0..5c04428d8f 100644
--- a/packages/perseus/src/widgets/dropdown/score-dropdown.test.ts
+++ b/packages/perseus-score/src/widgets/dropdown/score-dropdown.test.ts
@@ -1,4 +1,3 @@
-import {basicDropdown} from "./dropdown.testdata";
 import scoreDropdown from "./score-dropdown";
 
 import type {
@@ -13,7 +12,16 @@ describe("scoreDropdown", () => {
             value: 1,
         };
         const rubric: PerseusDropdownRubric = {
-            choices: basicDropdown.widgets["dropdown 1"].options.choices,
+            choices: [
+                {
+                    content: "greater than or equal to",
+                    correct: false,
+                },
+                {
+                    content: "less than or equal to",
+                    correct: true,
+                },
+            ],
         };
 
         // Act
@@ -29,7 +37,16 @@ describe("scoreDropdown", () => {
             value: 2,
         };
         const rubric: PerseusDropdownRubric = {
-            choices: basicDropdown.widgets["dropdown 1"].options.choices,
+            choices: [
+                {
+                    content: "greater than or equal to",
+                    correct: false,
+                },
+                {
+                    content: "less than or equal to",
+                    correct: true,
+                },
+            ],
         };
 
         // Act
diff --git a/packages/perseus/src/widgets/dropdown/score-dropdown.ts b/packages/perseus-score/src/widgets/dropdown/score-dropdown.ts
similarity index 92%
rename from packages/perseus/src/widgets/dropdown/score-dropdown.ts
rename to packages/perseus-score/src/widgets/dropdown/score-dropdown.ts
index 76ec2f96b1..4779c5ce47 100644
--- a/packages/perseus/src/widgets/dropdown/score-dropdown.ts
+++ b/packages/perseus-score/src/widgets/dropdown/score-dropdown.ts
@@ -1,9 +1,9 @@
 import validateDropdown from "./validate-dropdown";
 
-import type {PerseusScore} from "../../types";
 import type {
     PerseusDropdownRubric,
     PerseusDropdownUserInput,
+    PerseusScore,
 } from "../../validation.types";
 
 function scoreDropdown(
diff --git a/packages/perseus/src/widgets/dropdown/validate-dropdown.test.ts b/packages/perseus-score/src/widgets/dropdown/validate-dropdown.test.ts
similarity index 100%
rename from packages/perseus/src/widgets/dropdown/validate-dropdown.test.ts
rename to packages/perseus-score/src/widgets/dropdown/validate-dropdown.test.ts
diff --git a/packages/perseus/src/widgets/dropdown/validate-dropdown.ts b/packages/perseus-score/src/widgets/dropdown/validate-dropdown.ts
similarity index 77%
rename from packages/perseus/src/widgets/dropdown/validate-dropdown.ts
rename to packages/perseus-score/src/widgets/dropdown/validate-dropdown.ts
index bde2f6cba8..0ab02998f5 100644
--- a/packages/perseus/src/widgets/dropdown/validate-dropdown.ts
+++ b/packages/perseus-score/src/widgets/dropdown/validate-dropdown.ts
@@ -1,5 +1,7 @@
-import type {ValidationResult} from "../../types";
-import type {PerseusDropdownUserInput} from "../../validation.types";
+import type {
+    PerseusDropdownUserInput,
+    ValidationResult,
+} from "../../validation.types";
 
 /**
  * Checks if the user has selected an item from the dropdown before scoring.
diff --git a/packages/perseus/src/widgets/expression/score-expression.test.ts b/packages/perseus-score/src/widgets/expression/score-expression.test.ts
similarity index 95%
rename from packages/perseus/src/widgets/expression/score-expression.test.ts
rename to packages/perseus-score/src/widgets/expression/score-expression.test.ts
index cba87292eb..2bab201af6 100644
--- a/packages/perseus/src/widgets/expression/score-expression.test.ts
+++ b/packages/perseus-score/src/widgets/expression/score-expression.test.ts
@@ -1,10 +1,11 @@
-import {mockStrings} from "../../strings";
-
-import {expressionItem3Options} from "./expression.testdata";
 import scoreExpression from "./score-expression";
+import {expressionItem3Options} from "./score-expression.testdata";
 import * as ExpressionValidator from "./validate-expression";
 
-import type {PerseusExpressionRubric} from "../../validation.types";
+import type {PerseusExpressionRubric} from "@khanacademy/perseus-score";
+
+// TODO: remove strings as a param for scorers
+const mockStrings = {};
 
 describe("scoreExpression", () => {
     it("should be correctly answerable if validation passes", function () {
diff --git a/packages/perseus-score/src/widgets/expression/score-expression.testdata.ts b/packages/perseus-score/src/widgets/expression/score-expression.testdata.ts
new file mode 100644
index 0000000000..ee152ecb48
--- /dev/null
+++ b/packages/perseus-score/src/widgets/expression/score-expression.testdata.ts
@@ -0,0 +1,36 @@
+import type {PerseusExpressionWidgetOptions} from "@khanacademy/perseus-core";
+
+export const expressionItem3Options: PerseusExpressionWidgetOptions = {
+    answerForms: [
+        {
+            considered: "ungraded",
+            form: false,
+            simplify: false,
+            value: "x+1",
+        },
+        {
+            considered: "wrong",
+            form: false,
+            simplify: false,
+            value: "y+1",
+        },
+        {
+            considered: "correct",
+            form: false,
+            simplify: false,
+            value: "z+1",
+        },
+        {
+            considered: "correct",
+            form: false,
+            simplify: false,
+            value: "a+1",
+        },
+    ],
+    times: false,
+    buttonSets: ["basic"],
+    functions: ["f", "g", "h"],
+    buttonsVisible: "focused",
+    visibleLabel: "number of cm",
+    ariaLabel: "number of centimeters",
+};
diff --git a/packages/perseus/src/widgets/expression/score-expression.ts b/packages/perseus-score/src/widgets/expression/score-expression.ts
similarity index 92%
rename from packages/perseus/src/widgets/expression/score-expression.ts
rename to packages/perseus-score/src/widgets/expression/score-expression.ts
index 72fc04f11f..94e3569264 100644
--- a/packages/perseus/src/widgets/expression/score-expression.ts
+++ b/packages/perseus-score/src/widgets/expression/score-expression.ts
@@ -1,21 +1,22 @@
 import * as KAS from "@khanacademy/kas";
-import {Errors} from "@khanacademy/perseus-core";
-import {KhanAnswerTypes} from "@khanacademy/perseus-score";
+import {
+    Errors,
+    getDecimalSeparator,
+    PerseusError,
+} from "@khanacademy/perseus-core";
 import _ from "underscore";
 
-import {Log} from "../../logging/log";
+import KhanAnswerTypes from "../../util/answer-types";
 
-import getDecimalSeparator from "./get-decimal-separator";
 import validateExpression from "./validate-expression";
 
-import type {PerseusStrings} from "../../strings";
-import type {PerseusScore} from "../../types";
+import type {Score} from "../../util/answer-types";
 import type {
     PerseusExpressionRubric,
     PerseusExpressionUserInput,
+    PerseusScore,
 } from "../../validation.types";
 import type {PerseusExpressionAnswerForm} from "@khanacademy/perseus-core";
-import type {Score} from "@khanacademy/perseus-score";
 
 /* Content creators input a list of answers which are matched from top to
  * bottom. The intent is that they can include spcific solutions which should
@@ -38,7 +39,8 @@ import type {Score} from "@khanacademy/perseus-score";
 function scoreExpression(
     userInput: PerseusExpressionUserInput,
     rubric: PerseusExpressionRubric,
-    strings: PerseusStrings,
+    // TODO: remove strings as a param for scorers
+    strings: any,
     locale: string,
 ): PerseusScore {
     const validationError = validateExpression(userInput);
@@ -62,12 +64,10 @@ function scoreExpression(
         // in the function variables list for the expression.
         if (!expression.parsed) {
             /* c8 ignore next */
-            Log.error(
+            throw new PerseusError(
                 "Unable to parse solution answer for expression",
                 Errors.InvalidInput,
-                {loggedMetadata: {rubric: JSON.stringify(rubric)}},
             );
-            return null;
         }
 
         return KhanAnswerTypes.expression.createValidatorFunctional(
diff --git a/packages/perseus/src/widgets/expression/validate-expression.test.ts b/packages/perseus-score/src/widgets/expression/validate-expression.test.ts
similarity index 100%
rename from packages/perseus/src/widgets/expression/validate-expression.test.ts
rename to packages/perseus-score/src/widgets/expression/validate-expression.test.ts
diff --git a/packages/perseus/src/widgets/expression/validate-expression.ts b/packages/perseus-score/src/widgets/expression/validate-expression.ts
similarity index 80%
rename from packages/perseus/src/widgets/expression/validate-expression.ts
rename to packages/perseus-score/src/widgets/expression/validate-expression.ts
index 89e0ef2f04..3941aae140 100644
--- a/packages/perseus/src/widgets/expression/validate-expression.ts
+++ b/packages/perseus-score/src/widgets/expression/validate-expression.ts
@@ -1,5 +1,7 @@
-import type {ValidationResult} from "../../types";
-import type {PerseusExpressionUserInput} from "../../validation.types";
+import type {
+    PerseusExpressionUserInput,
+    ValidationResult,
+} from "../../validation.types";
 
 /**
  * Checks user input from the expression widget to see if it is scorable.
diff --git a/packages/perseus/src/widgets/grapher/score-grapher.test.ts b/packages/perseus-score/src/widgets/grapher/score-grapher.test.ts
similarity index 98%
rename from packages/perseus/src/widgets/grapher/score-grapher.test.ts
rename to packages/perseus-score/src/widgets/grapher/score-grapher.test.ts
index 632e9b3ae2..db06034e43 100644
--- a/packages/perseus/src/widgets/grapher/score-grapher.test.ts
+++ b/packages/perseus-score/src/widgets/grapher/score-grapher.test.ts
@@ -1,10 +1,10 @@
 import scoreGrapher from "./score-grapher";
 
-import type {Coord} from "../../interactive2/types";
 import type {
-    PerseusGrapherRubric,
     PerseusGrapherUserInput,
+    PerseusGrapherRubric,
 } from "../../validation.types";
+import type {Coord} from "@khanacademy/perseus-core";
 
 describe("scoreGrapher", () => {
     it("is incorrect when user input type doesn't match rubric type", () => {
diff --git a/packages/perseus/src/widgets/grapher/score-grapher.ts b/packages/perseus-score/src/widgets/grapher/score-grapher.ts
similarity index 86%
rename from packages/perseus/src/widgets/grapher/score-grapher.ts
rename to packages/perseus-score/src/widgets/grapher/score-grapher.ts
index 4344550247..79b93f64e8 100644
--- a/packages/perseus/src/widgets/grapher/score-grapher.ts
+++ b/packages/perseus-score/src/widgets/grapher/score-grapher.ts
@@ -1,11 +1,9 @@
-import {Errors, PerseusError} from "@khanacademy/perseus-core";
+import {Errors, PerseusError, GrapherUtil} from "@khanacademy/perseus-core";
 
-import {functionForType} from "./util";
-
-import type {PerseusScore} from "../../types";
 import type {
-    PerseusGrapherRubric,
     PerseusGrapherUserInput,
+    PerseusGrapherRubric,
+    PerseusScore,
 } from "../../validation.types";
 import type {GrapherAnswerTypes} from "@khanacademy/perseus-core";
 
@@ -16,7 +14,7 @@ function getCoefficientsByType(
         return undefined;
     }
     if (data.type === "exponential" || data.type === "logarithm") {
-        const grader = functionForType(data.type);
+        const grader = GrapherUtil.functionForType(data.type);
         return grader.getCoefficients(data.coords, data.asymptote);
     } else if (
         data.type === "linear" ||
@@ -25,7 +23,7 @@ function getCoefficientsByType(
         data.type === "sinusoid" ||
         data.type === "tangent"
     ) {
-        const grader = functionForType(data.type);
+        const grader = GrapherUtil.functionForType(data.type);
         return grader.getCoefficients(data.coords);
     } else {
         throw new PerseusError("Invalid grapher type", Errors.InvalidInput);
@@ -54,7 +52,7 @@ function scoreGrapher(
     }
 
     // Get new function handler for grading
-    const grader = functionForType(userInput.type);
+    const grader = GrapherUtil.functionForType(userInput.type);
     const guessCoeffs = getCoefficientsByType(userInput);
     const correctCoeffs = getCoefficientsByType(rubric.correct);
 
diff --git a/packages/perseus/src/widgets/iframe/score-iframe.test.ts b/packages/perseus-score/src/widgets/iframe/score-iframe.test.ts
similarity index 96%
rename from packages/perseus/src/widgets/iframe/score-iframe.test.ts
rename to packages/perseus-score/src/widgets/iframe/score-iframe.test.ts
index 512a4ee3fa..2145a1e67e 100644
--- a/packages/perseus/src/widgets/iframe/score-iframe.test.ts
+++ b/packages/perseus-score/src/widgets/iframe/score-iframe.test.ts
@@ -1,4 +1,4 @@
-import {scoreIframe} from "./score-iframe";
+import scoreIframe from "./score-iframe";
 
 import type {PerseusIFrameUserInput} from "../../validation.types";
 
diff --git a/packages/perseus/src/widgets/iframe/score-iframe.ts b/packages/perseus-score/src/widgets/iframe/score-iframe.ts
similarity index 66%
rename from packages/perseus/src/widgets/iframe/score-iframe.ts
rename to packages/perseus-score/src/widgets/iframe/score-iframe.ts
index cb9585a953..35407949f2 100644
--- a/packages/perseus/src/widgets/iframe/score-iframe.ts
+++ b/packages/perseus-score/src/widgets/iframe/score-iframe.ts
@@ -1,9 +1,12 @@
-import type {PerseusScore} from "../../types";
-import type {PerseusIFrameUserInput} from "../../validation.types";
+import type {
+    PerseusIFrameUserInput,
+    PerseusScore,
+} from "../../validation.types";
 
-export function scoreIframe(userInput: PerseusIFrameUserInput): PerseusScore {
+// TODO: merge this with scoreCSProgram, it's the same code
+function scoreIframe(userInput: PerseusIFrameUserInput): PerseusScore {
     // The iframe can tell us whether it's correct or incorrect,
-    //  and pass an optional message
+    // and pass an optional message
     if (userInput.status === "correct") {
         return {
             type: "points",
@@ -25,3 +28,5 @@ export function scoreIframe(userInput: PerseusIFrameUserInput): PerseusScore {
         message: "Keep going, you're not there yet!",
     };
 }
+
+export default scoreIframe;
diff --git a/packages/perseus/src/widgets/input-number/score-input-number.test.ts b/packages/perseus-score/src/widgets/input-number/score-input-number.test.ts
similarity index 68%
rename from packages/perseus/src/widgets/input-number/score-input-number.test.ts
rename to packages/perseus-score/src/widgets/input-number/score-input-number.test.ts
index bd4bc6c248..9c4e0c4d01 100644
--- a/packages/perseus/src/widgets/input-number/score-input-number.test.ts
+++ b/packages/perseus-score/src/widgets/input-number/score-input-number.test.ts
@@ -1,8 +1,9 @@
-import {mockStrings} from "../../strings";
-
 import scoreInputNumber from "./score-input-number";
 
-import type {PerseusInputNumberRubric} from "../../validation.types";
+import type {
+    PerseusInputNumberRubric,
+    PerseusInputNumberUserInput,
+} from "@khanacademy/perseus-score";
 
 describe("scoreInputNumber", () => {
     it("scores correct answer correctly", () => {
@@ -14,11 +15,11 @@ describe("scoreInputNumber", () => {
             answerType: "percent",
         };
 
-        const useInput = {
+        const useInput: PerseusInputNumberUserInput = {
             currentValue: "1",
-        } as const;
+        };
 
-        const score = scoreInputNumber(useInput, rubric, mockStrings);
+        const score = scoreInputNumber(useInput, rubric);
 
         expect(score).toHaveBeenAnsweredCorrectly();
     });
@@ -32,11 +33,11 @@ describe("scoreInputNumber", () => {
             answerType: "percent",
         };
 
-        const useInput = {
+        const useInput: PerseusInputNumberUserInput = {
             currentValue: "2",
-        } as const;
+        };
 
-        const score = scoreInputNumber(useInput, rubric, mockStrings);
+        const score = scoreInputNumber(useInput, rubric);
 
         expect(score).toHaveBeenAnsweredIncorrectly();
     });
@@ -50,11 +51,11 @@ describe("scoreInputNumber", () => {
             answerType: "percent",
         };
 
-        const useInput = {
+        const useInput: PerseusInputNumberUserInput = {
             currentValue: "sadasdfas",
-        } as const;
+        };
 
-        const score = scoreInputNumber(useInput, rubric, mockStrings);
+        const score = scoreInputNumber(useInput, rubric);
 
         expect(score).toHaveInvalidInput("EXTRA_SYMBOLS_ERROR");
     });
@@ -73,14 +74,14 @@ describe("scoreInputNumber", () => {
             simplify: "required",
         };
 
-        const userInput = {
+        const userInput: PerseusInputNumberUserInput = {
             // 77 * pi = 241.90263432641407
             // within the 0.01 margin of error
             // to trigger the pi validation flow
             currentValue: "241.91",
-        } as const;
+        };
 
-        const score = scoreInputNumber(userInput, rubric, mockStrings);
+        const score = scoreInputNumber(userInput, rubric);
 
         expect(score.message).not.toBe(
             "Your answer is close, but yyou may " +
@@ -101,12 +102,28 @@ describe("scoreInputNumber", () => {
             answerType: "pi",
         };
 
-        const userInput = {
+        const userInput: PerseusInputNumberUserInput = {
             currentValue: "77 pi",
-        } as const;
+        };
 
-        const score = scoreInputNumber(userInput, rubric, mockStrings);
+        const score = scoreInputNumber(userInput, rubric);
 
         expect(score).toHaveBeenAnsweredCorrectly();
     });
+
+    it("should handle invalid answers with no error callback", function () {
+        const rubric: PerseusInputNumberRubric = {
+            value: "2^{-2}-3",
+            simplify: "optional",
+        };
+
+        const userInput: PerseusInputNumberUserInput = {currentValue: "x+1"};
+
+        const err = scoreInputNumber(userInput, rubric);
+
+        expect(err).toEqual({
+            message: "EXTRA_SYMBOLS_ERROR",
+            type: "invalid",
+        });
+    });
 });
diff --git a/packages/perseus/src/widgets/input-number/score-input-number.ts b/packages/perseus-score/src/widgets/input-number/score-input-number.ts
similarity index 82%
rename from packages/perseus/src/widgets/input-number/score-input-number.ts
rename to packages/perseus-score/src/widgets/input-number/score-input-number.ts
index 4069ec11f2..bcefbf5783 100644
--- a/packages/perseus/src/widgets/input-number/score-input-number.ts
+++ b/packages/perseus-score/src/widgets/input-number/score-input-number.ts
@@ -1,17 +1,13 @@
-import {KhanAnswerTypes} from "@khanacademy/perseus-score";
+import KhanAnswerTypes from "../../util/answer-types";
+import {parseTex} from "../../util/tex-wrangler";
 
-import TexWrangler from "../../tex-wrangler";
-
-import type {PerseusStrings} from "../../strings";
 import type {
     PerseusInputNumberRubric,
     PerseusInputNumberUserInput,
+    PerseusScore,
 } from "../../validation.types";
-import type {PerseusScore} from "@khanacademy/perseus";
-
-const ParseTex = TexWrangler.parseTex;
 
-export const answerTypes = {
+export const inputNumberAnswerTypes = {
     number: {
         name: "Numbers",
         forms: "integer, decimal, proper, improper, mixed",
@@ -49,7 +45,6 @@ export const answerTypes = {
 function scoreInputNumber(
     userInput: PerseusInputNumberUserInput,
     rubric: PerseusInputNumberRubric,
-    strings: PerseusStrings,
 ): PerseusScore {
     if (rubric.answerType == null) {
         rubric.answerType = "number";
@@ -63,12 +58,12 @@ function scoreInputNumber(
         simplify: rubric.simplify,
         inexact: rubric.inexact || undefined,
         maxError: rubric.maxError,
-        forms: answerTypes[rubric.answerType].forms,
+        forms: inputNumberAnswerTypes[rubric.answerType].forms,
     });
 
     // We may have received TeX; try to parse it before grading.
     // If `currentValue` is not TeX, this should be a no-op.
-    const currentValue = ParseTex(userInput.currentValue);
+    const currentValue = parseTex(userInput.currentValue);
 
     const result = val(currentValue);
 
diff --git a/packages/perseus/src/widgets/interactive-graphs/score-interactive-graph.test.ts b/packages/perseus-score/src/widgets/interactive-graph/score-interactive-graph.test.ts
similarity index 98%
rename from packages/perseus/src/widgets/interactive-graphs/score-interactive-graph.test.ts
rename to packages/perseus-score/src/widgets/interactive-graph/score-interactive-graph.test.ts
index 0dd6aad92a..a1c530ff08 100644
--- a/packages/perseus/src/widgets/interactive-graphs/score-interactive-graph.test.ts
+++ b/packages/perseus-score/src/widgets/interactive-graph/score-interactive-graph.test.ts
@@ -1,6 +1,5 @@
 import invariant from "tiny-invariant";
-
-import {clone} from "../../../../../testing/object-utils";
+import _ from "underscore";
 
 import scoreInteractiveGraph from "./score-interactive-graph";
 
@@ -326,7 +325,7 @@ describe("InteractiveGraph scoring on a point question", () => {
             },
         };
 
-        const guessClone = clone(guess);
+        const guessClone = _.clone(guess);
 
         scoreInteractiveGraph(guess, rubric);
 
@@ -352,7 +351,7 @@ describe("InteractiveGraph scoring on a point question", () => {
             },
         };
 
-        const rubricClone = clone(rubric);
+        const rubricClone = _.clone(rubric);
 
         scoreInteractiveGraph(guess, rubric);
 
diff --git a/packages/perseus/src/widgets/interactive-graphs/score-interactive-graph.ts b/packages/perseus-score/src/widgets/interactive-graph/score-interactive-graph.ts
similarity index 88%
rename from packages/perseus/src/widgets/interactive-graphs/score-interactive-graph.ts
rename to packages/perseus-score/src/widgets/interactive-graph/score-interactive-graph.ts
index 0525f2add5..d78804c196 100644
--- a/packages/perseus/src/widgets/interactive-graphs/score-interactive-graph.ts
+++ b/packages/perseus-score/src/widgets/interactive-graph/score-interactive-graph.ts
@@ -1,27 +1,25 @@
-import {number as knumber} from "@khanacademy/kmath";
-import _ from "underscore";
-
-import Util from "../../util";
 import {
-    canonicalSineCoefficients,
-    collinear,
-    similar,
-} from "../../util/geometry";
+    number as knumber,
+    geometry,
+    angles,
+    coefficients,
+} from "@khanacademy/kmath";
 import {
-    getQuadraticCoefficients,
-    getSinusoidCoefficients,
-} from "../interactive-graph";
-
-import {getClockwiseAngle} from "./math/angles";
+    approximateDeepEqual,
+    approximateEqual,
+    deepClone,
+} from "@khanacademy/perseus-core";
+import _ from "underscore";
 
-import type {PerseusScore} from "../../types";
 import type {
+    PerseusScore,
     PerseusInteractiveGraphRubric,
     PerseusInteractiveGraphUserInput,
-} from "../../validation.types";
+} from "@khanacademy/perseus-score";
 
-const eq = Util.eq;
-const deepEq = Util.deepEq;
+const {collinear, canonicalSineCoefficients, similar} = geometry;
+const {getClockwiseAngle} = angles;
+const {getSinusoidCoefficients, getQuadraticCoefficients} = coefficients;
 
 function scoreInteractiveGraph(
     userInput: PerseusInteractiveGraphUserInput,
@@ -104,7 +102,7 @@ function scoreInteractiveGraph(
             const correctCoeffs = getQuadraticCoefficients(
                 rubric.correct.coords,
             );
-            if (deepEq(guessCoeffs, correctCoeffs)) {
+            if (approximateDeepEqual(guessCoeffs, correctCoeffs)) {
                 return {
                     type: "points",
                     earned: 1,
@@ -126,7 +124,12 @@ function scoreInteractiveGraph(
             const canonicalCorrectCoeffs =
                 canonicalSineCoefficients(correctCoeffs);
             // If the canonical coefficients match, it's correct.
-            if (deepEq(canonicalGuessCoeffs, canonicalCorrectCoeffs)) {
+            if (
+                approximateDeepEqual(
+                    canonicalGuessCoeffs,
+                    canonicalCorrectCoeffs,
+                )
+            ) {
                 return {
                     type: "points",
                     earned: 1,
@@ -139,8 +142,8 @@ function scoreInteractiveGraph(
             rubric.correct.type === "circle"
         ) {
             if (
-                deepEq(userInput.center, rubric.correct.center) &&
-                eq(userInput.radius, rubric.correct.radius)
+                approximateDeepEqual(userInput.center, rubric.correct.center) &&
+                approximateEqual(userInput.radius, rubric.correct.radius)
             ) {
                 return {
                     type: "points",
@@ -167,7 +170,7 @@ function scoreInteractiveGraph(
             guess?.sort();
             // @ts-expect-error - TS2339 - Property 'sort' does not exist on type 'readonly Coord[]'.
             correct.sort();
-            if (deepEq(guess, correct)) {
+            if (approximateDeepEqual(guess, correct)) {
                 return {
                     type: "points",
                     earned: 1,
@@ -194,7 +197,7 @@ function scoreInteractiveGraph(
                 /* exact */
                 guess.sort();
                 correct.sort();
-                match = deepEq(guess, correct);
+                match = approximateDeepEqual(guess, correct);
             }
 
             if (match) {
@@ -210,11 +213,11 @@ function scoreInteractiveGraph(
             rubric.correct.type === "segment" &&
             userInput.coords != null
         ) {
-            let guess = Util.deepClone(userInput.coords);
-            let correct = Util.deepClone(rubric.correct.coords);
+            let guess = deepClone(userInput.coords);
+            let correct = deepClone(rubric.correct.coords);
             guess = _.invoke(guess, "sort").sort();
             correct = _.invoke(correct, "sort").sort();
-            if (deepEq(guess, correct)) {
+            if (approximateDeepEqual(guess, correct)) {
                 return {
                     type: "points",
                     earned: 1,
@@ -230,7 +233,7 @@ function scoreInteractiveGraph(
             const guess = userInput.coords;
             const correct = rubric.correct.coords;
             if (
-                deepEq(guess[0], correct[0]) &&
+                approximateDeepEqual(guess[0], correct[0]) &&
                 collinear(correct[0], correct[1], guess[1])
             ) {
                 return {
@@ -258,11 +261,11 @@ function scoreInteractiveGraph(
                     return angle;
                 });
                 // @ts-expect-error - TS2556 - A spread argument must either have a tuple type or be passed to a rest parameter.
-                match = eq(...angles);
+                match = approximateEqual(...angles);
             } else {
                 /* exact */
                 match = // @ts-expect-error - TS2532 - Object is possibly 'undefined'. | TS2532 - Object is possibly 'undefined'.
-                    deepEq(guess[1], correct[1]) &&
+                    approximateDeepEqual(guess[1], correct[1]) &&
                     // @ts-expect-error - TS2532 - Object is possibly 'undefined'. | TS2532 - Object is possibly 'undefined'. | TS2532 - Object is possibly 'undefined'.
                     collinear(correct[1], correct[0], guess[0]) &&
                     // @ts-expect-error - TS2532 - Object is possibly 'undefined'. | TS2532 - Object is possibly 'undefined'. | TS2532 - Object is possibly 'undefined'.
diff --git a/packages/perseus/src/widgets/label-image/score-label-image.test.ts b/packages/perseus-score/src/widgets/label-image/score-label-image.test.ts
similarity index 94%
rename from packages/perseus/src/widgets/label-image/score-label-image.test.ts
rename to packages/perseus-score/src/widgets/label-image/score-label-image.test.ts
index cc58962b27..4085586f04 100644
--- a/packages/perseus/src/widgets/label-image/score-label-image.test.ts
+++ b/packages/perseus-score/src/widgets/label-image/score-label-image.test.ts
@@ -1,4 +1,4 @@
-import scoreLabelImage, {scoreMarker} from "./score-label-image";
+import scoreLabelImage, {scoreLabelImageMarker} from "./score-label-image";
 
 const emptyMarker = {
     label: "",
@@ -8,9 +8,9 @@ const emptyMarker = {
     y: 0,
 } as const;
 
-describe("scoreMarker", function () {
+describe("scoreLabelImageMarker", function () {
     it("should score correct for empty marker with no user answers", function () {
-        const score = scoreMarker({
+        const score = scoreLabelImageMarker({
             ...emptyMarker,
         });
 
@@ -21,7 +21,7 @@ describe("scoreMarker", function () {
     });
 
     it("should score incorrect for empty marker with user answer", function () {
-        const score = scoreMarker({
+        const score = scoreLabelImageMarker({
             ...emptyMarker,
             selected: ["Fiat"],
         });
@@ -33,7 +33,7 @@ describe("scoreMarker", function () {
     });
 
     it("should score incorrect for no user answers", function () {
-        const score = scoreMarker({
+        const score = scoreLabelImageMarker({
             ...emptyMarker,
             answers: ["Lamborghini", "Fiat", "Ferrari"],
         });
@@ -45,7 +45,7 @@ describe("scoreMarker", function () {
     });
 
     it("should score incorrect for wrong user answers", function () {
-        const score = scoreMarker({
+        const score = scoreLabelImageMarker({
             ...emptyMarker,
             answers: ["Lamborghini", "Fiat", "Ferrari"],
             selected: ["Fiat", "Ferrari"],
@@ -58,7 +58,7 @@ describe("scoreMarker", function () {
     });
 
     it("should score correct for user answers", function () {
-        const score = scoreMarker({
+        const score = scoreLabelImageMarker({
             ...emptyMarker,
             answers: ["Lamborghini", "Fiat", "Ferrari"],
             selected: ["Lamborghini", "Fiat", "Ferrari"],
diff --git a/packages/perseus/src/widgets/label-image/score-label-image.ts b/packages/perseus-score/src/widgets/label-image/score-label-image.ts
similarity index 92%
rename from packages/perseus/src/widgets/label-image/score-label-image.ts
rename to packages/perseus-score/src/widgets/label-image/score-label-image.ts
index 85dcb8d0a1..998262b267 100644
--- a/packages/perseus/src/widgets/label-image/score-label-image.ts
+++ b/packages/perseus-score/src/widgets/label-image/score-label-image.ts
@@ -1,9 +1,9 @@
-import type {InteractiveMarkerType} from "./types";
-import type {PerseusScore} from "../../types";
 import type {
-    PerseusLabelImageRubric,
     PerseusLabelImageUserInput,
+    PerseusLabelImageRubric,
+    PerseusScore,
 } from "../../validation.types";
+import type {InteractiveMarkerType} from "@khanacademy/perseus-core";
 
 // Question state for marker as result of user selected answers.
 type InteractiveMarkerScore = {
@@ -13,7 +13,7 @@ type InteractiveMarkerScore = {
     isCorrect: boolean;
 };
 
-export function scoreMarker(
+export function scoreLabelImageMarker(
     marker: InteractiveMarkerType,
 ): InteractiveMarkerScore {
     const score = {
@@ -52,7 +52,7 @@ function scoreLabelImage(
     let numCorrect = 0;
 
     for (const marker of userInput.markers) {
-        const score = scoreMarker(marker);
+        const score = scoreLabelImageMarker(marker);
 
         if (score.hasAnswers) {
             numAnswered++;
diff --git a/packages/perseus/src/widgets/matcher/score-matcher.test.ts b/packages/perseus-score/src/widgets/matcher/score-matcher.test.ts
similarity index 100%
rename from packages/perseus/src/widgets/matcher/score-matcher.test.ts
rename to packages/perseus-score/src/widgets/matcher/score-matcher.test.ts
diff --git a/packages/perseus/src/widgets/matcher/score-matcher.ts b/packages/perseus-score/src/widgets/matcher/score-matcher.ts
similarity index 91%
rename from packages/perseus/src/widgets/matcher/score-matcher.ts
rename to packages/perseus-score/src/widgets/matcher/score-matcher.ts
index 524a56f294..f90f3fe019 100644
--- a/packages/perseus/src/widgets/matcher/score-matcher.ts
+++ b/packages/perseus-score/src/widgets/matcher/score-matcher.ts
@@ -1,9 +1,9 @@
 import _ from "underscore";
 
-import type {PerseusScore} from "../../types";
 import type {
     PerseusMatcherRubric,
     PerseusMatcherUserInput,
+    PerseusScore,
 } from "../../validation.types";
 
 function scoreMatcher(
diff --git a/packages/perseus/src/widgets/matrix/score-matrix.test.ts b/packages/perseus-score/src/widgets/matrix/score-matrix.test.ts
similarity index 83%
rename from packages/perseus/src/widgets/matrix/score-matrix.test.ts
rename to packages/perseus-score/src/widgets/matrix/score-matrix.test.ts
index 8a4d5f7d59..115022239d 100644
--- a/packages/perseus/src/widgets/matrix/score-matrix.test.ts
+++ b/packages/perseus-score/src/widgets/matrix/score-matrix.test.ts
@@ -1,5 +1,3 @@
-import {mockStrings} from "../../strings";
-
 import scoreMatrix from "./score-matrix";
 import * as MatrixValidator from "./validate-matrix";
 
@@ -28,14 +26,10 @@ describe("scoreMatrix", () => {
         };
 
         // Act
-        const score = scoreMatrix(userInput, rubric, mockStrings);
+        const score = scoreMatrix(userInput, rubric);
 
         // Assert
-        expect(mockValidator).toHaveBeenCalledWith(
-            userInput,
-            rubric,
-            mockStrings,
-        );
+        expect(mockValidator).toHaveBeenCalledWith(userInput, rubric);
         expect(score).toHaveBeenAnsweredCorrectly();
     });
 
@@ -58,14 +52,10 @@ describe("scoreMatrix", () => {
         };
 
         // Act
-        const score = scoreMatrix(userInput, rubric, mockStrings);
+        const score = scoreMatrix(userInput, rubric);
 
         // Assert
-        expect(mockValidator).toHaveBeenCalledWith(
-            userInput,
-            rubric,
-            mockStrings,
-        );
+        expect(mockValidator).toHaveBeenCalledWith(userInput, rubric);
         expect(score).toHaveInvalidInput();
     });
 
@@ -84,7 +74,7 @@ describe("scoreMatrix", () => {
         };
 
         // Act
-        const result = scoreMatrix(userInput, rubric, mockStrings);
+        const result = scoreMatrix(userInput, rubric);
 
         // Assert
         expect(result).toHaveBeenAnsweredCorrectly();
@@ -109,7 +99,7 @@ describe("scoreMatrix", () => {
         };
 
         // Act
-        const result = scoreMatrix(userInput, rubric, mockStrings);
+        const result = scoreMatrix(userInput, rubric);
 
         // Assert
         expect(result).toHaveBeenAnsweredIncorrectly();
@@ -137,7 +127,7 @@ describe("scoreMatrix", () => {
         };
 
         // Act
-        const result = scoreMatrix(userInput, rubric, mockStrings);
+        const result = scoreMatrix(userInput, rubric);
 
         // Assert
         expect(result).toHaveInvalidInput();
@@ -165,7 +155,7 @@ describe("scoreMatrix", () => {
         };
 
         // Act
-        const result = scoreMatrix(userInput, rubric, mockStrings);
+        const result = scoreMatrix(userInput, rubric);
 
         // Assert
         expect(result).toHaveInvalidInput();
@@ -194,16 +184,8 @@ describe("scoreMatrix", () => {
         };
 
         // Act
-        const correctResult = scoreMatrix(
-            correctUserInput,
-            rubric,
-            mockStrings,
-        );
-        const incorrectResult = scoreMatrix(
-            incorrectUserInput,
-            rubric,
-            mockStrings,
-        );
+        const correctResult = scoreMatrix(correctUserInput, rubric);
+        const incorrectResult = scoreMatrix(incorrectUserInput, rubric);
 
         // Assert
         expect(correctResult).toHaveBeenAnsweredCorrectly();
diff --git a/packages/perseus/src/widgets/matrix/score-matrix.ts b/packages/perseus-score/src/widgets/matrix/score-matrix.ts
similarity index 86%
rename from packages/perseus/src/widgets/matrix/score-matrix.ts
rename to packages/perseus-score/src/widgets/matrix/score-matrix.ts
index c8bcfd39d8..02962ac248 100644
--- a/packages/perseus/src/widgets/matrix/score-matrix.ts
+++ b/packages/perseus-score/src/widgets/matrix/score-matrix.ts
@@ -1,22 +1,21 @@
-import {KhanAnswerTypes} from "@khanacademy/perseus-score";
+import {getMatrixSize} from "@khanacademy/perseus-core";
 import _ from "underscore";
 
-import {getMatrixSize} from "./matrix";
+import KhanAnswerTypes from "../../util/answer-types";
+
 import validateMatrix from "./validate-matrix";
 
-import type {PerseusStrings} from "../../strings";
-import type {PerseusScore} from "../../types";
 import type {
-    PerseusMatrixRubric,
     PerseusMatrixUserInput,
+    PerseusMatrixRubric,
+    PerseusScore,
 } from "../../validation.types";
 
 function scoreMatrix(
     userInput: PerseusMatrixUserInput,
     rubric: PerseusMatrixRubric,
-    strings: PerseusStrings,
 ): PerseusScore {
-    const validationResult = validateMatrix(userInput, rubric, strings);
+    const validationResult = validateMatrix(userInput, rubric);
     if (validationResult != null) {
         return validationResult;
     }
diff --git a/packages/perseus/src/widgets/matrix/validate-matrix.test.ts b/packages/perseus-score/src/widgets/matrix/validate-matrix.test.ts
similarity index 81%
rename from packages/perseus/src/widgets/matrix/validate-matrix.test.ts
rename to packages/perseus-score/src/widgets/matrix/validate-matrix.test.ts
index f7583fafad..3100e7fdee 100644
--- a/packages/perseus/src/widgets/matrix/validate-matrix.test.ts
+++ b/packages/perseus-score/src/widgets/matrix/validate-matrix.test.ts
@@ -1,5 +1,3 @@
-import {mockStrings} from "../../strings";
-
 import validateMatrix from "./validate-matrix";
 
 import type {PerseusMatrixUserInput} from "../../validation.types";
@@ -12,7 +10,7 @@ describe("matrixValidator", () => {
         };
 
         // Act
-        const result = validateMatrix(userInput, {}, mockStrings);
+        const result = validateMatrix(userInput, {});
 
         // Assert
         expect(result).toHaveInvalidInput();
@@ -25,7 +23,7 @@ describe("matrixValidator", () => {
         };
 
         // Act
-        const result = validateMatrix(userInput, {}, mockStrings);
+        const result = validateMatrix(userInput, {});
 
         // Assert
         expect(result).toHaveInvalidInput();
@@ -42,7 +40,7 @@ describe("matrixValidator", () => {
         };
 
         // Act
-        const result = validateMatrix(userInput, {}, mockStrings);
+        const result = validateMatrix(userInput, {});
 
         // Assert
         expect(result).toBeNull();
diff --git a/packages/perseus/src/widgets/matrix/validate-matrix.ts b/packages/perseus-score/src/widgets/matrix/validate-matrix.ts
similarity index 80%
rename from packages/perseus/src/widgets/matrix/validate-matrix.ts
rename to packages/perseus-score/src/widgets/matrix/validate-matrix.ts
index c10da17186..2697a2333e 100644
--- a/packages/perseus/src/widgets/matrix/validate-matrix.ts
+++ b/packages/perseus-score/src/widgets/matrix/validate-matrix.ts
@@ -1,12 +1,11 @@
-import _ from "underscore";
+import {getMatrixSize} from "@khanacademy/perseus-core";
 
-import {getMatrixSize} from "./matrix";
+import ErrorCodes from "../../error-codes";
 
-import type {PerseusStrings} from "../../strings";
-import type {ValidationResult} from "../../types";
 import type {
     PerseusMatrixUserInput,
     PerseusMatrixValidationData,
+    ValidationResult,
 } from "../../validation.types";
 
 /**
@@ -20,7 +19,6 @@ import type {
 function validateMatrix(
     userInput: PerseusMatrixUserInput,
     validationData: PerseusMatrixValidationData,
-    strings: PerseusStrings,
 ): ValidationResult {
     const supplied = userInput.answers;
     const suppliedSize = getMatrixSize(supplied);
@@ -33,7 +31,7 @@ function validateMatrix(
             ) {
                 return {
                     type: "invalid",
-                    message: strings.fillAllCells,
+                    message: ErrorCodes.FILL_ALL_CELLS_ERROR,
                 };
             }
         }
diff --git a/packages/perseus/src/widgets/number-line/score-number-line.test.ts b/packages/perseus-score/src/widgets/number-line/score-number-line.test.ts
similarity index 100%
rename from packages/perseus/src/widgets/number-line/score-number-line.test.ts
rename to packages/perseus-score/src/widgets/number-line/score-number-line.test.ts
diff --git a/packages/perseus/src/widgets/number-line/score-number-line.ts b/packages/perseus-score/src/widgets/number-line/score-number-line.ts
similarity index 96%
rename from packages/perseus/src/widgets/number-line/score-number-line.ts
rename to packages/perseus-score/src/widgets/number-line/score-number-line.ts
index 429c39d680..9e63d2395e 100644
--- a/packages/perseus/src/widgets/number-line/score-number-line.ts
+++ b/packages/perseus-score/src/widgets/number-line/score-number-line.ts
@@ -2,10 +2,10 @@ import {number as knumber} from "@khanacademy/kmath";
 
 import validateNumberLine from "./validate-number-line";
 
-import type {PerseusScore} from "../../types";
 import type {
     PerseusNumberLineScoringData,
     PerseusNumberLineUserInput,
+    PerseusScore,
 } from "../../validation.types";
 
 function scoreNumberLine(
diff --git a/packages/perseus/src/widgets/number-line/validate-number-line.test.ts b/packages/perseus-score/src/widgets/number-line/validate-number-line.test.ts
similarity index 100%
rename from packages/perseus/src/widgets/number-line/validate-number-line.test.ts
rename to packages/perseus-score/src/widgets/number-line/validate-number-line.test.ts
diff --git a/packages/perseus/src/widgets/number-line/validate-number-line.ts b/packages/perseus-score/src/widgets/number-line/validate-number-line.ts
similarity index 86%
rename from packages/perseus/src/widgets/number-line/validate-number-line.ts
rename to packages/perseus-score/src/widgets/number-line/validate-number-line.ts
index bc57947c8c..3cdbdb65fb 100644
--- a/packages/perseus/src/widgets/number-line/validate-number-line.ts
+++ b/packages/perseus-score/src/widgets/number-line/validate-number-line.ts
@@ -1,5 +1,7 @@
-import type {PerseusScore} from "../../types";
-import type {PerseusNumberLineUserInput} from "../../validation.types";
+import type {
+    PerseusNumberLineUserInput,
+    PerseusScore,
+} from "../../validation.types";
 
 /**
  * Checks user input is within the allowed range and not the same as the initial
diff --git a/packages/perseus/src/widgets/numeric-input/score-numeric-input.test.ts b/packages/perseus-score/src/widgets/numeric-input/score-numeric-input.test.ts
similarity index 86%
rename from packages/perseus/src/widgets/numeric-input/score-numeric-input.test.ts
rename to packages/perseus-score/src/widgets/numeric-input/score-numeric-input.test.ts
index 14c31b3dc1..c070aaf5c1 100644
--- a/packages/perseus/src/widgets/numeric-input/score-numeric-input.test.ts
+++ b/packages/perseus-score/src/widgets/numeric-input/score-numeric-input.test.ts
@@ -1,18 +1,8 @@
-import {testDependencies} from "../../../../../testing/test-dependencies";
-import * as Dependencies from "../../dependencies";
-import {mockStrings} from "../../strings";
-
 import scoreNumericInput, {maybeParsePercentInput} from "./score-numeric-input";
 
 import type {PerseusNumericInputRubric} from "../../validation.types";
 
 describe("static function validate", () => {
-    beforeEach(() => {
-        jest.spyOn(Dependencies, "getDependencies").mockReturnValue(
-            testDependencies,
-        );
-    });
-
     it("with a simple value", () => {
         const rubric: PerseusNumericInputRubric = {
             answers: [
@@ -32,7 +22,7 @@ describe("static function validate", () => {
             currentValue: "1",
         } as const;
 
-        const score = scoreNumericInput(userInput, rubric, mockStrings);
+        const score = scoreNumericInput(userInput, rubric);
 
         expect(score).toHaveBeenAnsweredCorrectly();
     });
@@ -56,7 +46,7 @@ describe("static function validate", () => {
             currentValue: "sadasdfas",
         } as const;
 
-        const score = scoreNumericInput(userInput, rubric, mockStrings);
+        const score = scoreNumericInput(userInput, rubric);
 
         expect(score).toHaveInvalidInput("EXTRA_SYMBOLS_ERROR");
     });
@@ -89,7 +79,7 @@ describe("static function validate", () => {
             currentValue: "45.282",
         } as const;
 
-        const score = scoreNumericInput(userInput, rubric, mockStrings);
+        const score = scoreNumericInput(userInput, rubric);
 
         expect(score.message).not.toBe(
             "Your answer is close, but you may " +
@@ -121,7 +111,7 @@ describe("static function validate", () => {
             currentValue: "99 pi",
         } as const;
 
-        const score = scoreNumericInput(userInput, rubric, mockStrings);
+        const score = scoreNumericInput(userInput, rubric);
 
         expect(score).toHaveBeenAnsweredCorrectly();
     });
@@ -145,7 +135,7 @@ describe("static function validate", () => {
             currentValue: "1.0",
         } as const;
 
-        const score = scoreNumericInput(userInput, rubric, mockStrings);
+        const score = scoreNumericInput(userInput, rubric);
 
         expect(score).toHaveBeenAnsweredCorrectly();
     });
@@ -169,7 +159,7 @@ describe("static function validate", () => {
             currentValue: "1.3",
         } as const;
 
-        const score = scoreNumericInput(userInput, rubric, mockStrings);
+        const score = scoreNumericInput(userInput, rubric);
 
         expect(score).toHaveBeenAnsweredIncorrectly();
     });
@@ -193,7 +183,7 @@ describe("static function validate", () => {
             currentValue: "1.12",
         } as const;
 
-        const score = scoreNumericInput(userInput, rubric, mockStrings);
+        const score = scoreNumericInput(userInput, rubric);
 
         expect(score).toHaveBeenAnsweredCorrectly();
     });
@@ -228,7 +218,7 @@ describe("static function validate", () => {
         const wrongInput = {
             currentValue: "4",
         } as const;
-        let score = scoreNumericInput(wrongInput, rubric, mockStrings);
+        let score = scoreNumericInput(wrongInput, rubric);
 
         // Assert - "wrong"
         expect(score).toHaveBeenAnsweredIncorrectly();
@@ -237,7 +227,7 @@ describe("static function validate", () => {
         const correctInput = {
             currentValue: "14",
         } as const;
-        score = scoreNumericInput(correctInput, rubric, mockStrings);
+        score = scoreNumericInput(correctInput, rubric);
 
         // Assert - "correct"
         expect(score).toHaveBeenAnsweredCorrectly();
@@ -271,7 +261,7 @@ describe("static function validate", () => {
         const emptyInput = {
             currentValue: "",
         } as const;
-        let score = scoreNumericInput(emptyInput, rubric, mockStrings);
+        let score = scoreNumericInput(emptyInput, rubric);
 
         // Assert - "empty"
         expect(score).toHaveBeenAnsweredCorrectly();
@@ -280,7 +270,7 @@ describe("static function validate", () => {
         const incompleteInput = {
             currentValue: "-",
         } as const;
-        score = scoreNumericInput(incompleteInput, rubric, mockStrings);
+        score = scoreNumericInput(incompleteInput, rubric);
 
         // Assert - "incomplete"
         expect(score).toHaveBeenAnsweredCorrectly();
@@ -314,11 +304,7 @@ describe("static function validate", () => {
             coefficient: true,
         };
 
-        const score = scoreNumericInput(
-            {currentValue: "50%"},
-            rubric,
-            mockStrings,
-        );
+        const score = scoreNumericInput({currentValue: "50%"}, rubric);
 
         expect(score).toHaveBeenAnsweredIncorrectly();
     });
@@ -351,11 +337,7 @@ describe("static function validate", () => {
             coefficient: true,
         };
 
-        const score = scoreNumericInput(
-            {currentValue: "50%"},
-            rubric,
-            mockStrings,
-        );
+        const score = scoreNumericInput({currentValue: "50%"}, rubric);
 
         expect(score).toHaveBeenAnsweredIncorrectly();
     });
@@ -375,11 +357,7 @@ describe("static function validate", () => {
             coefficient: true,
         };
 
-        const score = scoreNumericInput(
-            {currentValue: "20%"},
-            rubric,
-            mockStrings,
-        );
+        const score = scoreNumericInput({currentValue: "20%"}, rubric);
 
         expect(score).toHaveBeenAnsweredCorrectly();
     });
@@ -402,11 +380,7 @@ describe("static function validate", () => {
             coefficient: true,
         };
 
-        const score = scoreNumericInput(
-            {currentValue: "120%"},
-            rubric,
-            mockStrings,
-        );
+        const score = scoreNumericInput({currentValue: "120%"}, rubric);
 
         expect(score).toHaveBeenAnsweredIncorrectly();
     });
@@ -429,11 +403,7 @@ describe("static function validate", () => {
             coefficient: true,
         };
 
-        const score = scoreNumericInput(
-            {currentValue: "1.1%"},
-            rubric,
-            mockStrings,
-        );
+        const score = scoreNumericInput({currentValue: "1.1%"}, rubric);
 
         expect(score).toHaveBeenAnsweredCorrectly();
     });
@@ -453,23 +423,13 @@ describe("static function validate", () => {
             coefficient: true,
         };
 
-        const score = scoreNumericInput(
-            {currentValue: "0.9%"},
-            rubric,
-            mockStrings,
-        );
+        const score = scoreNumericInput({currentValue: "0.9%"}, rubric);
 
         expect(score).toHaveBeenAnsweredIncorrectly();
     });
 });
 
 describe("maybeParsePercentInput utility function", () => {
-    beforeEach(() => {
-        jest.spyOn(Dependencies, "getDependencies").mockReturnValue(
-            testDependencies,
-        );
-    });
-
     it("returns a percent if the input is a percent", () => {
         const result = maybeParsePercentInput("3%", false);
 
diff --git a/packages/perseus/src/widgets/numeric-input/score-numeric-input.ts b/packages/perseus-score/src/widgets/numeric-input/score-numeric-input.ts
similarity index 93%
rename from packages/perseus/src/widgets/numeric-input/score-numeric-input.ts
rename to packages/perseus-score/src/widgets/numeric-input/score-numeric-input.ts
index 7053e63cc8..8b9e3c58f1 100644
--- a/packages/perseus/src/widgets/numeric-input/score-numeric-input.ts
+++ b/packages/perseus-score/src/widgets/numeric-input/score-numeric-input.ts
@@ -1,20 +1,16 @@
-import {KhanAnswerTypes} from "@khanacademy/perseus-score";
+import KhanAnswerTypes from "../../util/answer-types";
+import {parseTex} from "../../util/tex-wrangler";
 
-import TexWrangler from "../../tex-wrangler";
-
-import type {PerseusStrings} from "../../strings";
-import type {PerseusScore} from "../../types";
+import type {Score} from "../../util/answer-types";
 import type {
     PerseusNumericInputRubric,
     PerseusNumericInputUserInput,
+    PerseusScore,
 } from "../../validation.types";
 import type {
     MathFormat,
     PerseusNumericInputAnswer,
 } from "@khanacademy/perseus-core";
-import type {Score} from "@khanacademy/perseus-score";
-
-const ParseTex = TexWrangler.parseTex;
 
 const answerFormButtons: ReadonlyArray<{
     title: string;
@@ -72,7 +68,6 @@ export function maybeParsePercentInput(
 function scoreNumericInput(
     userInput: PerseusNumericInputUserInput,
     rubric: PerseusNumericInputRubric,
-    strings: PerseusStrings,
 ): PerseusScore {
     const defaultAnswerForms = answerFormButtons
         .map((e) => e["value"])
@@ -107,7 +102,7 @@ function scoreNumericInput(
 
     // We may have received TeX; try to parse it before grading.
     // If `currentValue` is not TeX, this should be a no-op.
-    const currentValue = ParseTex(userInput.currentValue);
+    const currentValue = parseTex(userInput.currentValue);
 
     const normalizedAnswerExpected = rubric.answers
         .filter((answer) => answer.status === "correct")
diff --git a/packages/perseus/src/widgets/orderer/score-orderer.test.ts b/packages/perseus-score/src/widgets/orderer/score-orderer.test.ts
similarity index 66%
rename from packages/perseus/src/widgets/orderer/score-orderer.test.ts
rename to packages/perseus-score/src/widgets/orderer/score-orderer.test.ts
index a5595f5249..4f7695833f 100644
--- a/packages/perseus/src/widgets/orderer/score-orderer.test.ts
+++ b/packages/perseus-score/src/widgets/orderer/score-orderer.test.ts
@@ -1,5 +1,4 @@
-import {question1} from "./orderer.testdata";
-import {scoreOrderer} from "./score-orderer";
+import scoreOrderer from "./score-orderer";
 import * as OrdererValidator from "./validate-orderer";
 
 import type {
@@ -7,16 +6,31 @@ import type {
     PerseusOrdererUserInput,
 } from "../../validation.types";
 
+function generateOrdererRubric(): PerseusOrdererRubric {
+    return {
+        otherOptions: [],
+        layout: "horizontal",
+        options: [
+            {content: "a", images: {}, widgets: {}},
+            {content: "c", images: {}, widgets: {}},
+            {content: "b", images: {}, widgets: {}},
+        ],
+        correctOptions: [
+            {content: "a", images: {}, widgets: {}},
+            {content: "b", images: {}, widgets: {}},
+            {content: "c", images: {}, widgets: {}},
+        ],
+        height: "normal",
+    };
+}
+
 describe("scoreOrderer", () => {
     it("is correct when the userInput is in the same order and is the same length as the rubric's correctOption content items", () => {
         // Arrange
-        const rubric: PerseusOrdererRubric =
-            question1.widgets["orderer 1"].options;
+        const rubric: PerseusOrdererRubric = generateOrdererRubric();
 
         const userInput: PerseusOrdererUserInput = {
-            current: question1.widgets["orderer 1"].options.correctOptions.map(
-                (option) => option.content,
-            ),
+            current: rubric.correctOptions.map((e) => e.content),
         };
 
         // Act
@@ -28,11 +42,10 @@ describe("scoreOrderer", () => {
 
     it("is incorrect when the userInput is not in the same order as the rubric's correctOption content items", () => {
         // Arrange
-        const rubric: PerseusOrdererRubric =
-            question1.widgets["orderer 1"].options;
+        const rubric: PerseusOrdererRubric = generateOrdererRubric();
 
         const userInput: PerseusOrdererUserInput = {
-            current: ["$10.9$", "$11$", "$\\sqrt{120}$"],
+            current: rubric.options.map((e) => e.content),
         };
 
         // Act
@@ -44,11 +57,10 @@ describe("scoreOrderer", () => {
 
     it("is incorrect when the userInput is not the same length as the rubric's correctOption content items", () => {
         // Arrange
-        const rubric: PerseusOrdererRubric =
-            question1.widgets["orderer 1"].options;
+        const rubric: PerseusOrdererRubric = generateOrdererRubric();
 
         const userInput: PerseusOrdererUserInput = {
-            current: ["$10.9$", "$11$"],
+            current: rubric.correctOptions.map((e) => e.content).slice(1),
         };
 
         // Act
@@ -64,13 +76,10 @@ describe("scoreOrderer", () => {
             .spyOn(OrdererValidator, "default")
             .mockReturnValue(null);
 
-        const rubric: PerseusOrdererRubric =
-            question1.widgets["orderer 1"].options;
+        const rubric: PerseusOrdererRubric = generateOrdererRubric();
 
         const userInput: PerseusOrdererUserInput = {
-            current: question1.widgets["orderer 1"].options.correctOptions.map(
-                (option) => option.content,
-            ),
+            current: rubric.correctOptions.map((e) => e.content),
         };
         // Act
         const result = scoreOrderer(userInput, rubric);
@@ -89,8 +98,7 @@ describe("scoreOrderer", () => {
                 message: null,
             });
 
-        const rubric: PerseusOrdererRubric =
-            question1.widgets["orderer 1"].options;
+        const rubric: PerseusOrdererRubric = generateOrdererRubric();
 
         const userInput: PerseusOrdererUserInput = {
             current: [],
diff --git a/packages/perseus/src/widgets/orderer/score-orderer.ts b/packages/perseus-score/src/widgets/orderer/score-orderer.ts
similarity index 89%
rename from packages/perseus/src/widgets/orderer/score-orderer.ts
rename to packages/perseus-score/src/widgets/orderer/score-orderer.ts
index a1d5336ccf..5057dd0569 100644
--- a/packages/perseus/src/widgets/orderer/score-orderer.ts
+++ b/packages/perseus-score/src/widgets/orderer/score-orderer.ts
@@ -2,13 +2,13 @@ import _ from "underscore";
 
 import validateOrderer from "./validate-orderer";
 
-import type {PerseusScore} from "../../types";
 import type {
     PerseusOrdererRubric,
     PerseusOrdererUserInput,
+    PerseusScore,
 } from "../../validation.types";
 
-export function scoreOrderer(
+function scoreOrderer(
     userInput: PerseusOrdererUserInput,
     rubric: PerseusOrdererRubric,
 ): PerseusScore {
@@ -29,3 +29,5 @@ export function scoreOrderer(
         message: null,
     };
 }
+
+export default scoreOrderer;
diff --git a/packages/perseus/src/widgets/orderer/validate-orderer.test.ts b/packages/perseus-score/src/widgets/orderer/validate-orderer.test.ts
similarity index 100%
rename from packages/perseus/src/widgets/orderer/validate-orderer.test.ts
rename to packages/perseus-score/src/widgets/orderer/validate-orderer.test.ts
diff --git a/packages/perseus/src/widgets/orderer/validate-orderer.ts b/packages/perseus-score/src/widgets/orderer/validate-orderer.ts
similarity index 79%
rename from packages/perseus/src/widgets/orderer/validate-orderer.ts
rename to packages/perseus-score/src/widgets/orderer/validate-orderer.ts
index f8d440ac3f..d88c24ec22 100644
--- a/packages/perseus/src/widgets/orderer/validate-orderer.ts
+++ b/packages/perseus-score/src/widgets/orderer/validate-orderer.ts
@@ -1,5 +1,7 @@
-import type {ValidationResult} from "../../types";
-import type {PerseusOrdererUserInput} from "../../validation.types";
+import type {
+    PerseusOrdererUserInput,
+    ValidationResult,
+} from "../../validation.types";
 
 /**
  * Checks user input from the orderer widget to see if the user has started
diff --git a/packages/perseus/src/widgets/plotter/score-plotter.test.ts b/packages/perseus-score/src/widgets/plotter/score-plotter.test.ts
similarity index 100%
rename from packages/perseus/src/widgets/plotter/score-plotter.test.ts
rename to packages/perseus-score/src/widgets/plotter/score-plotter.test.ts
diff --git a/packages/perseus/src/widgets/plotter/score-plotter.ts b/packages/perseus-score/src/widgets/plotter/score-plotter.ts
similarity index 74%
rename from packages/perseus/src/widgets/plotter/score-plotter.ts
rename to packages/perseus-score/src/widgets/plotter/score-plotter.ts
index 41674387e9..fb311bf1d3 100644
--- a/packages/perseus/src/widgets/plotter/score-plotter.ts
+++ b/packages/perseus-score/src/widgets/plotter/score-plotter.ts
@@ -1,15 +1,14 @@
-import Util from "../../util";
+import {approximateDeepEqual} from "@khanacademy/perseus-core";
+import _ from "underscore";
 
 import validatePlotter from "./validate-plotter";
 
-import type {PerseusScore} from "../../types";
 import type {
-    PerseusPlotterScoringData,
     PerseusPlotterUserInput,
+    PerseusPlotterScoringData,
+    PerseusScore,
 } from "../../validation.types";
 
-const {deepEq} = Util;
-
 function scorePlotter(
     userInput: PerseusPlotterUserInput,
     scoringData: PerseusPlotterScoringData,
@@ -20,7 +19,7 @@ function scorePlotter(
     }
     return {
         type: "points",
-        earned: deepEq(userInput, scoringData.correct) ? 1 : 0,
+        earned: approximateDeepEqual(userInput, scoringData.correct) ? 1 : 0,
         total: 1,
         message: null,
     };
diff --git a/packages/perseus/src/widgets/plotter/validate-plotter.test.ts b/packages/perseus-score/src/widgets/plotter/validate-plotter.test.ts
similarity index 100%
rename from packages/perseus/src/widgets/plotter/validate-plotter.test.ts
rename to packages/perseus-score/src/widgets/plotter/validate-plotter.test.ts
diff --git a/packages/perseus/src/widgets/plotter/validate-plotter.ts b/packages/perseus-score/src/widgets/plotter/validate-plotter.ts
similarity index 77%
rename from packages/perseus/src/widgets/plotter/validate-plotter.ts
rename to packages/perseus-score/src/widgets/plotter/validate-plotter.ts
index 60cf5b2b00..3c0c89f0c1 100644
--- a/packages/perseus/src/widgets/plotter/validate-plotter.ts
+++ b/packages/perseus-score/src/widgets/plotter/validate-plotter.ts
@@ -1,13 +1,12 @@
-import Util from "../../util";
+import {approximateDeepEqual} from "@khanacademy/perseus-core";
+import _ from "underscore";
 
-import type {ValidationResult} from "../../types";
 import type {
     PerseusPlotterUserInput,
     PerseusPlotterValidationData,
+    ValidationResult,
 } from "../../validation.types";
 
-const {deepEq} = Util;
-
 /**
  * Checks user input to confirm it is not the same as the starting values for the graph.
  * This means the user has modified the graph, and the question can be scored.
@@ -18,7 +17,7 @@ function validatePlotter(
     userInput: PerseusPlotterUserInput,
     validationData: PerseusPlotterValidationData,
 ): ValidationResult {
-    if (deepEq(userInput, validationData.starting)) {
+    if (approximateDeepEqual(userInput, validationData.starting)) {
         return {
             type: "invalid",
             message: null,
diff --git a/packages/perseus/src/widgets/radio/score-radio.test.ts b/packages/perseus-score/src/widgets/radio/score-radio.test.ts
similarity index 89%
rename from packages/perseus/src/widgets/radio/score-radio.test.ts
rename to packages/perseus-score/src/widgets/radio/score-radio.test.ts
index 0ad4c50b1c..aaad164794 100644
--- a/packages/perseus/src/widgets/radio/score-radio.test.ts
+++ b/packages/perseus-score/src/widgets/radio/score-radio.test.ts
@@ -1,5 +1,3 @@
-import {mockStrings} from "../../strings";
-
 import scoreRadio from "./score-radio";
 
 import type {
@@ -22,7 +20,7 @@ describe("scoreRadio", () => {
             ],
         };
 
-        const score = scoreRadio(userInput, rubric, mockStrings);
+        const score = scoreRadio(userInput, rubric);
 
         expect(score).toHaveInvalidInput();
     });
@@ -46,7 +44,7 @@ describe("scoreRadio", () => {
             ],
         };
 
-        const score = scoreRadio(userInput, rubric, mockStrings);
+        const score = scoreRadio(userInput, rubric);
 
         expect(score).toHaveInvalidInput();
     });
@@ -65,7 +63,7 @@ describe("scoreRadio", () => {
             ],
         };
 
-        const score = scoreRadio(userInput, rubric, mockStrings);
+        const score = scoreRadio(userInput, rubric);
 
         expect(score).toHaveBeenAnsweredCorrectly();
     });
@@ -84,7 +82,7 @@ describe("scoreRadio", () => {
             ],
         };
 
-        const score = scoreRadio(userInput, rubric, mockStrings);
+        const score = scoreRadio(userInput, rubric);
 
         expect(score).toHaveBeenAnsweredIncorrectly();
     });
@@ -103,7 +101,7 @@ describe("scoreRadio", () => {
             ],
         };
 
-        const score = scoreRadio(userInput, rubric, mockStrings);
+        const score = scoreRadio(userInput, rubric);
 
         expect(score).toHaveBeenAnsweredCorrectly();
     });
@@ -122,7 +120,7 @@ describe("scoreRadio", () => {
             ],
         };
 
-        const score = scoreRadio(userInput, rubric, mockStrings);
+        const score = scoreRadio(userInput, rubric);
 
         expect(score).toHaveBeenAnsweredIncorrectly();
     });
@@ -142,7 +140,7 @@ describe("scoreRadio", () => {
             ],
         };
 
-        const score = scoreRadio(userInput, rubric, mockStrings);
+        const score = scoreRadio(userInput, rubric);
 
         expect(score).toHaveBeenAnsweredCorrectly();
     });
@@ -162,7 +160,7 @@ describe("scoreRadio", () => {
             ],
         };
 
-        const score = scoreRadio(userInput, rubric, mockStrings);
+        const score = scoreRadio(userInput, rubric);
 
         expect(score).toHaveBeenAnsweredIncorrectly();
     });
diff --git a/packages/perseus/src/widgets/radio/score-radio.ts b/packages/perseus-score/src/widgets/radio/score-radio.ts
similarity index 88%
rename from packages/perseus/src/widgets/radio/score-radio.ts
rename to packages/perseus-score/src/widgets/radio/score-radio.ts
index 51586d3c41..eb04198d67 100644
--- a/packages/perseus/src/widgets/radio/score-radio.ts
+++ b/packages/perseus-score/src/widgets/radio/score-radio.ts
@@ -1,16 +1,16 @@
+import ErrorCodes from "../../error-codes";
+
 import validateRadio from "./validate-radio";
 
-import type {PerseusStrings} from "../../strings";
-import type {PerseusScore} from "../../types";
 import type {
     PerseusRadioRubric,
     PerseusRadioUserInput,
+    PerseusScore,
 } from "../../validation.types";
 
 function scoreRadio(
     userInput: PerseusRadioUserInput,
     rubric: PerseusRadioRubric,
-    strings: PerseusStrings,
 ): PerseusScore {
     const validationError = validateRadio(userInput);
     if (validationError) {
@@ -28,7 +28,7 @@ function scoreRadio(
     if (numCorrect > 1 && numSelected !== numCorrect) {
         return {
             type: "invalid",
-            message: strings.chooseCorrectNum,
+            message: ErrorCodes.CHOOSE_CORRECT_NUM_ERROR,
         };
         // If NOTA and some other answer are checked, ...
     }
@@ -41,7 +41,7 @@ function scoreRadio(
     if (noneOfTheAboveSelected && numSelected > 1) {
         return {
             type: "invalid",
-            message: strings.notNoneOfTheAbove,
+            message: ErrorCodes.NOT_NONE_ABOVE_ERROR,
         };
     }
 
diff --git a/packages/perseus/src/widgets/radio/validate-radio.test.ts b/packages/perseus-score/src/widgets/radio/validate-radio.test.ts
similarity index 100%
rename from packages/perseus/src/widgets/radio/validate-radio.test.ts
rename to packages/perseus-score/src/widgets/radio/validate-radio.test.ts
diff --git a/packages/perseus/src/widgets/radio/validate-radio.ts b/packages/perseus-score/src/widgets/radio/validate-radio.ts
similarity index 86%
rename from packages/perseus/src/widgets/radio/validate-radio.ts
rename to packages/perseus-score/src/widgets/radio/validate-radio.ts
index 9f363343db..9d27aef9f7 100644
--- a/packages/perseus/src/widgets/radio/validate-radio.ts
+++ b/packages/perseus-score/src/widgets/radio/validate-radio.ts
@@ -1,5 +1,7 @@
-import type {ValidationResult} from "../../types";
-import type {PerseusRadioUserInput} from "../../validation.types";
+import type {
+    PerseusRadioUserInput,
+    ValidationResult,
+} from "../../validation.types";
 
 /**
  * Checks if the user has selected at least one option. Additional validation
diff --git a/packages/perseus/src/widgets/sorter/score-sorter.test.ts b/packages/perseus-score/src/widgets/sorter/score-sorter.test.ts
similarity index 100%
rename from packages/perseus/src/widgets/sorter/score-sorter.test.ts
rename to packages/perseus-score/src/widgets/sorter/score-sorter.test.ts
index 8420df08e0..5569f4032d 100644
--- a/packages/perseus/src/widgets/sorter/score-sorter.test.ts
+++ b/packages/perseus-score/src/widgets/sorter/score-sorter.test.ts
@@ -2,8 +2,8 @@ import scoreSorter from "./score-sorter";
 import * as SorterValidator from "./validate-sorter";
 
 import type {
-    PerseusSorterRubric,
     PerseusSorterUserInput,
+    PerseusSorterRubric,
 } from "../../validation.types";
 
 describe("scoreSorter", () => {
diff --git a/packages/perseus/src/widgets/sorter/score-sorter.ts b/packages/perseus-score/src/widgets/sorter/score-sorter.ts
similarity index 74%
rename from packages/perseus/src/widgets/sorter/score-sorter.ts
rename to packages/perseus-score/src/widgets/sorter/score-sorter.ts
index f86579d3e9..ce7570b8f9 100644
--- a/packages/perseus/src/widgets/sorter/score-sorter.ts
+++ b/packages/perseus-score/src/widgets/sorter/score-sorter.ts
@@ -1,11 +1,12 @@
-import Util from "../../util";
+import {approximateDeepEqual} from "@khanacademy/perseus-core";
+import _ from "underscore";
 
 import validateSorter from "./validate-sorter";
 
-import type {PerseusScore} from "../../types";
 import type {
-    PerseusSorterRubric,
     PerseusSorterUserInput,
+    PerseusSorterRubric,
+    PerseusScore,
 } from "../../validation.types";
 
 function scoreSorter(
@@ -17,7 +18,7 @@ function scoreSorter(
         return validationError;
     }
 
-    const correct = Util.deepEq(userInput.options, rubric.correct);
+    const correct = approximateDeepEqual(userInput.options, rubric.correct);
     return {
         type: "points",
         earned: correct ? 1 : 0,
diff --git a/packages/perseus/src/widgets/sorter/validate-sorter.test.ts b/packages/perseus-score/src/widgets/sorter/validate-sorter.test.ts
similarity index 100%
rename from packages/perseus/src/widgets/sorter/validate-sorter.test.ts
rename to packages/perseus-score/src/widgets/sorter/validate-sorter.test.ts
diff --git a/packages/perseus/src/widgets/sorter/validate-sorter.ts b/packages/perseus-score/src/widgets/sorter/validate-sorter.ts
similarity index 89%
rename from packages/perseus/src/widgets/sorter/validate-sorter.ts
rename to packages/perseus-score/src/widgets/sorter/validate-sorter.ts
index 16c5b659d8..709839a8f5 100644
--- a/packages/perseus/src/widgets/sorter/validate-sorter.ts
+++ b/packages/perseus-score/src/widgets/sorter/validate-sorter.ts
@@ -1,5 +1,7 @@
-import type {ValidationResult} from "../../types";
-import type {PerseusSorterUserInput} from "../../validation.types";
+import type {
+    PerseusSorterUserInput,
+    ValidationResult,
+} from "../../validation.types";
 
 /**
  * Checks user input for the sorter widget to ensure that the user has made
diff --git a/packages/perseus/src/widgets/table/score-table.test.ts b/packages/perseus-score/src/widgets/table/score-table.test.ts
similarity index 87%
rename from packages/perseus/src/widgets/table/score-table.test.ts
rename to packages/perseus-score/src/widgets/table/score-table.test.ts
index bab0aabfa3..abfae150e6 100644
--- a/packages/perseus/src/widgets/table/score-table.test.ts
+++ b/packages/perseus-score/src/widgets/table/score-table.test.ts
@@ -1,5 +1,3 @@
-import {mockStrings} from "../../strings";
-
 import scoreTable from "./score-table";
 import * as TableValidator from "./validate-table";
 
@@ -28,7 +26,7 @@ describe("scoreTable", () => {
         };
 
         // Act
-        const score = scoreTable(userInput, rubric, mockStrings);
+        const score = scoreTable(userInput, rubric);
 
         // Assert
         expect(mockValidator).toHaveBeenCalledWith(userInput);
@@ -54,7 +52,7 @@ describe("scoreTable", () => {
         };
 
         // Act
-        const score = scoreTable(userInput, rubric, mockStrings);
+        const score = scoreTable(userInput, rubric);
 
         // Assert
         expect(mockValidator).toHaveBeenCalledWith(userInput);
@@ -76,7 +74,7 @@ describe("scoreTable", () => {
         };
 
         // Act
-        const result = scoreTable(userInput, rubric, mockStrings);
+        const result = scoreTable(userInput, rubric);
 
         // Assert
         expect(result).toHaveInvalidInput();
@@ -98,7 +96,7 @@ describe("scoreTable", () => {
         };
 
         // Act
-        const result = scoreTable(userInput, rubric, mockStrings);
+        const result = scoreTable(userInput, rubric);
 
         // Assert
         expect(result).toHaveBeenAnsweredIncorrectly();
@@ -119,7 +117,7 @@ describe("scoreTable", () => {
         };
 
         // Act
-        const result = scoreTable(userInput, rubric, mockStrings);
+        const result = scoreTable(userInput, rubric);
 
         // Assert
         expect(result).toHaveBeenAnsweredIncorrectly();
@@ -140,7 +138,7 @@ describe("scoreTable", () => {
         };
 
         // Act
-        const result = scoreTable(userInput, rubric, mockStrings);
+        const result = scoreTable(userInput, rubric);
 
         // Assert
         expect(result).toHaveBeenAnsweredCorrectly();
@@ -161,7 +159,7 @@ describe("scoreTable", () => {
         };
 
         // Act
-        const result = scoreTable(userInput, rubric, mockStrings);
+        const result = scoreTable(userInput, rubric);
 
         // Assert
         expect(result).toHaveBeenAnsweredCorrectly();
diff --git a/packages/perseus/src/widgets/table/score-table.ts b/packages/perseus-score/src/widgets/table/score-table.ts
similarity index 89%
rename from packages/perseus/src/widgets/table/score-table.ts
rename to packages/perseus-score/src/widgets/table/score-table.ts
index 6f1d1a83ba..778eb5a0cd 100644
--- a/packages/perseus/src/widgets/table/score-table.ts
+++ b/packages/perseus-score/src/widgets/table/score-table.ts
@@ -1,12 +1,10 @@
-import {KhanAnswerTypes} from "@khanacademy/perseus-score";
-import _ from "underscore";
+import KhanAnswerTypes from "../../util/answer-types";
 
 import {filterNonEmpty} from "./utils";
 import validateTable from "./validate-table";
 
-import type {PerseusStrings} from "../../strings";
-import type {PerseusScore} from "../../types";
 import type {
+    PerseusScore,
     PerseusTableRubric,
     PerseusTableUserInput,
 } from "../../validation.types";
@@ -14,7 +12,6 @@ import type {
 function scoreTable(
     userInput: PerseusTableUserInput,
     rubric: PerseusTableRubric,
-    strings: PerseusStrings,
 ): PerseusScore {
     const validationResult = validateTable(userInput);
     if (validationResult != null) {
diff --git a/packages/perseus/src/widgets/table/utils.ts b/packages/perseus-score/src/widgets/table/utils.ts
similarity index 100%
rename from packages/perseus/src/widgets/table/utils.ts
rename to packages/perseus-score/src/widgets/table/utils.ts
diff --git a/packages/perseus/src/widgets/table/validate-table.test.ts b/packages/perseus-score/src/widgets/table/validate-table.test.ts
similarity index 100%
rename from packages/perseus/src/widgets/table/validate-table.test.ts
rename to packages/perseus-score/src/widgets/table/validate-table.test.ts
diff --git a/packages/perseus/src/widgets/table/validate-table.ts b/packages/perseus-score/src/widgets/table/validate-table.ts
similarity index 81%
rename from packages/perseus/src/widgets/table/validate-table.ts
rename to packages/perseus-score/src/widgets/table/validate-table.ts
index 676cfc8ff6..58298edc11 100644
--- a/packages/perseus/src/widgets/table/validate-table.ts
+++ b/packages/perseus-score/src/widgets/table/validate-table.ts
@@ -1,7 +1,9 @@
 import {filterNonEmpty} from "./utils";
 
-import type {ValidationResult} from "../../types";
-import type {PerseusTableUserInput} from "../../validation.types";
+import type {
+    PerseusTableUserInput,
+    ValidationResult,
+} from "../../validation.types";
 
 function validateTable(userInput: PerseusTableUserInput): ValidationResult {
     const supplied = filterNonEmpty(userInput);
diff --git a/packages/perseus/src/__tests__/renderer-api.test.tsx b/packages/perseus/src/__tests__/renderer-api.test.tsx
index 9c9dab8811..ef9c44f961 100644
--- a/packages/perseus/src/__tests__/renderer-api.test.tsx
+++ b/packages/perseus/src/__tests__/renderer-api.test.tsx
@@ -21,7 +21,7 @@ import mockWidget1Item from "./test-items/mock-widget-1-item";
 import mockWidget2Item from "./test-items/mock-widget-2-item";
 import tableItem from "./test-items/table-item";
 
-import type {PerseusMockWidgetUserInput} from "../validation.types";
+import type {PerseusMockWidgetUserInput} from "@khanacademy/perseus-score";
 import type {UserEvent} from "@testing-library/user-event";
 
 const itemWidget = mockWidget1Item;
diff --git a/packages/perseus/src/__tests__/util.test.ts b/packages/perseus/src/__tests__/util.test.ts
index e3d31b49f0..88e83f0255 100644
--- a/packages/perseus/src/__tests__/util.test.ts
+++ b/packages/perseus/src/__tests__/util.test.ts
@@ -38,27 +38,3 @@ describe("#constrainedTickStepsFromTickSteps", () => {
         expect(result).toEqual([5, 5]);
     });
 });
-
-describe("deepClone", () => {
-    it("does nothing to a primitive", () => {
-        expect(Util.deepClone(3)).toBe(3);
-    });
-
-    it("copies an array", () => {
-        const input = [1, 2, 3];
-
-        const result = Util.deepClone(input);
-
-        expect(result).toEqual(input);
-        expect(result).not.toBe(input);
-    });
-
-    it("recursively clones array elements", () => {
-        const input = [[1]];
-
-        const result = Util.deepClone(input);
-
-        expect(result).toEqual(input);
-        expect(result[0]).not.toBe(input[0]);
-    });
-});
diff --git a/packages/perseus/src/components/graphie-classes.ts b/packages/perseus/src/components/graphie-classes.ts
index 350237f25d..689189679c 100644
--- a/packages/perseus/src/components/graphie-classes.ts
+++ b/packages/perseus/src/components/graphie-classes.ts
@@ -1,12 +1,15 @@
 /* eslint-disable @babel/no-invalid-this */
 
-import {Errors, PerseusError} from "@khanacademy/perseus-core";
+import {
+    approximateDeepEqual,
+    Errors,
+    PerseusError,
+} from "@khanacademy/perseus-core";
 import _ from "underscore";
 
 import Util from "../util";
 
 const nestedMap = Util.nestedMap;
-const deepEq = Util.deepEq;
 
 /**
  * A base class for all Graphie Movables
@@ -116,7 +119,7 @@ const createSimpleClass = function (addFunction: any): any {
         },
 
         modify: function (graphie) {
-            if (!deepEq(this.props, this._prevProps)) {
+            if (!approximateDeepEqual(this.props, this._prevProps)) {
                 this.remove();
                 this.add(graphie);
                 this._prevProps = this.props;
diff --git a/packages/perseus/src/components/graphie.tsx b/packages/perseus/src/components/graphie.tsx
index cbc30b4bfc..dc207229d2 100644
--- a/packages/perseus/src/components/graphie.tsx
+++ b/packages/perseus/src/components/graphie.tsx
@@ -1,4 +1,4 @@
-import {Errors} from "@khanacademy/perseus-core";
+import {approximateDeepEqual, Errors} from "@khanacademy/perseus-core";
 import $ from "jquery";
 import * as React from "react";
 import _ from "underscore";
@@ -18,7 +18,7 @@ import type {Range, Size} from "@khanacademy/perseus-core";
 const GraphieMovable = GraphieClasses.GraphieMovable;
 
 const createGraphie = GraphUtils.createGraphie;
-const {deepEq, nestedMap} = Util;
+const {nestedMap} = Util;
 const {assert} = InteractiveUtil;
 
 type Props = {
@@ -114,9 +114,9 @@ class Graphie extends React.Component<Props> {
             );
         }
         if (
-            !deepEq(this.props.options, prevProps.options) ||
-            !deepEq(this.props.box, prevProps.box) ||
-            !deepEq(this.props.range, prevProps.range)
+            !approximateDeepEqual(this.props.options, prevProps.options) ||
+            !approximateDeepEqual(this.props.box, prevProps.box) ||
+            !approximateDeepEqual(this.props.range, prevProps.range)
         ) {
             this._setupGraphie();
         }
diff --git a/packages/perseus/src/index.ts b/packages/perseus/src/index.ts
index 15fdf3ea0c..972bc3609f 100644
--- a/packages/perseus/src/index.ts
+++ b/packages/perseus/src/index.ts
@@ -41,7 +41,6 @@ export {default as GrapherWidget} from "./widgets/grapher";
 // `perseus`, so only export the stuff that does need to be exposed
 import {keScoreFromPerseusScore} from "./util/scoring";
 import {
-    allTypes,
     DEFAULT_GRAPHER_PROPS,
     chooseType,
     defaultPlotProps,
@@ -50,7 +49,6 @@ import {
 } from "./widgets/grapher/util";
 
 export const GrapherUtil = {
-    allTypes,
     DEFAULT_GRAPHER_PROPS,
     chooseType,
     defaultPlotProps,
@@ -147,9 +145,6 @@ export {
     getQuadraticCoords,
     getAngleCoords,
 } from "./widgets/interactive-graphs/reducer/initialize-graph-state";
-// This export is to support necessary functionality in the perseus-editor package.
-// It should be removed if widgets and editors become colocated.
-export {getClockwiseAngle} from "./widgets/interactive-graphs/math";
 
 export {makeSafeUrl} from "./widgets/phet-simulation";
 
@@ -188,7 +183,6 @@ export type {
     JiptRenderer,
     PerseusDependencies,
     PerseusDependenciesV2,
-    PerseusScore,
     Version,
     VideoData,
     VideoKind,
@@ -197,10 +191,7 @@ export type {
 } from "./types";
 export type {ParsedValue} from "./util";
 export type {Result, Success, Failure} from "./util/parse-perseus-json/result";
-export type {UserInputMap} from "./validation.types";
 export type {Coord} from "./interactive2/types";
-export type {Coords} from "./widgets/grapher/grapher-types";
-export type {MarkerType} from "./widgets/label-image/types";
 export type {
     RendererPromptJSON,
     WidgetPromptJSON,
diff --git a/packages/perseus/src/renderer-util.test.ts b/packages/perseus/src/renderer-util.test.ts
index 2bdfc26fca..7153127126 100644
--- a/packages/perseus/src/renderer-util.test.ts
+++ b/packages/perseus/src/renderer-util.test.ts
@@ -17,12 +17,12 @@ import {registerAllWidgetsForTesting} from "./util/register-all-widgets-for-test
 import {renderQuestion} from "./widgets/__testutils__/renderQuestion";
 import {question1} from "./widgets/group/group.testdata";
 
-import type {UserInputMap} from "./validation.types";
 import type {
     DropdownWidget,
     ExpressionWidget,
     PerseusWidgetsMap,
 } from "@khanacademy/perseus-core";
+import type {UserInputMap} from "@khanacademy/perseus-score";
 import type {UserEvent} from "@testing-library/user-event";
 
 function getTestDropdownWidget(): DropdownWidget {
diff --git a/packages/perseus/src/renderer-util.ts b/packages/perseus/src/renderer-util.ts
index 39c137a931..1e0c41fd34 100644
--- a/packages/perseus/src/renderer-util.ts
+++ b/packages/perseus/src/renderer-util.ts
@@ -5,12 +5,15 @@ import {getWidgetIdsFromContent} from "./widget-type-utils";
 import {getWidgetScorer, upgradeWidgetInfoToLatestVersion} from "./widgets";
 
 import type {PerseusStrings} from "./strings";
-import type {PerseusScore} from "./types";
-import type {UserInput, UserInputMap} from "./validation.types";
 import type {
     PerseusRenderer,
     PerseusWidgetsMap,
 } from "@khanacademy/perseus-core";
+import type {
+    PerseusScore,
+    UserInput,
+    UserInputMap,
+} from "@khanacademy/perseus-score";
 
 export function getUpgradedWidgetOptions(
     oldWidgetOptions: PerseusWidgetsMap,
diff --git a/packages/perseus/src/renderer.tsx b/packages/perseus/src/renderer.tsx
index 84b7c8183a..8199bd2f95 100644
--- a/packages/perseus/src/renderer.tsx
+++ b/packages/perseus/src/renderer.tsx
@@ -43,12 +43,10 @@ import type {
     APIOptionsWithDefaults,
     FilterCriterion,
     FocusPath,
-    PerseusScore,
     SerializedState,
     Widget,
     WidgetProps,
 } from "./types";
-import type {UserInputArray, UserInputMap} from "./validation.types";
 import type {
     GetPromptJSONInterface,
     RendererPromptJSON,
@@ -62,6 +60,11 @@ import type {
     ShowSolutions,
 } from "@khanacademy/perseus-core";
 import type {LinterContextProps} from "@khanacademy/perseus-linter";
+import type {
+    PerseusScore,
+    UserInputArray,
+    UserInputMap,
+} from "@khanacademy/perseus-score";
 
 import "./styles/perseus-renderer.less";
 
diff --git a/packages/perseus/src/server-item-renderer.tsx b/packages/perseus/src/server-item-renderer.tsx
index ba066aa03c..e9e3c3490d 100644
--- a/packages/perseus/src/server-item-renderer.tsx
+++ b/packages/perseus/src/server-item-renderer.tsx
@@ -26,7 +26,6 @@ import type {
     PerseusDependenciesV2,
     SharedRendererProps,
 } from "./types";
-import type {UserInputArray, UserInputMap} from "./validation.types";
 import type {
     GetPromptJSONInterface,
     RendererPromptJSON,
@@ -39,6 +38,7 @@ import type {
     RendererInterface,
     KEScore,
 } from "@khanacademy/perseus-core";
+import type {UserInputArray, UserInputMap} from "@khanacademy/perseus-score";
 import type {PropsFor} from "@khanacademy/wonder-blocks-core";
 
 type OwnProps = {
diff --git a/packages/perseus/src/strings.ts b/packages/perseus/src/strings.ts
index 8a7f81e329..d593fa2aa2 100644
--- a/packages/perseus/src/strings.ts
+++ b/packages/perseus/src/strings.ts
@@ -1,4 +1,4 @@
-import {ErrorCodes} from "@khanacademy/perseus-score";
+import type {ErrorCodes} from "@khanacademy/perseus-score";
 
 /**
  * The translated strings that are used to render Perseus.
@@ -318,12 +318,7 @@ export type PerseusStrings = {
  * translator to produce translated strings, passed in as `PerseusStrings`.
  * !! Note: Ensure that all escape sequences are double-escaped. (e.g. `\\text` -> `\\\\text`)
  */
-export const strings: {
-    [key in keyof PerseusStrings]:
-        | string
-        | {context?: string; message: string}
-        | {context?: string; one: string; other: string};
-} = {
+export const strings = {
     closeKeypad: "close math keypad",
     openKeypad: "open math keypad",
     mathInputBox: "Math input box",
@@ -543,6 +538,11 @@ export const strings: {
     srRayEndpoint: "Endpoint at %(point1X)s comma %(point1Y)s.",
     srRayTerminalPoint: "Through point at %(point2X)s comma %(point2Y)s.",
     // The above strings are used for interactive graph SR descriptions.
+} satisfies {
+    [key in keyof PerseusStrings]:
+        | string
+        | {context?: string; message: string}
+        | {context?: string; one: string; other: string};
 };
 
 /**
@@ -774,16 +774,25 @@ export const mockStrings: PerseusStrings = {
     // The above strings are used for interactive graph SR descriptions.
 };
 
-const errorToString = {
-    [ErrorCodes.MISSING_PERCENT_ERROR]: strings.MISSING_PERCENT_ERROR,
-    [ErrorCodes.NEEDS_TO_BE_SIMPLIFIED_ERROR]:
-        strings.NEEDS_TO_BE_SIMPLFIED_ERROR,
-    [ErrorCodes.APPROXIMATED_PI_ERROR]: strings.APPROXIMATED_PI_ERROR,
-    [ErrorCodes.EXTRA_SYMBOLS_ERROR]: strings.EXTRA_SYMBOLS_ERROR,
-    [ErrorCodes.WRONG_CASE_ERROR]: strings.WRONG_CASE_ERROR,
-    [ErrorCodes.WRONG_LETTER_ERROR]: strings.WRONG_LETTER_ERROR,
-    [ErrorCodes.MULTIPLICATION_SIGN_ERROR]: strings.MULTIPLICATION_SIGN_ERROR,
+// This type helps us make sure all error codes are mapped to strings
+type ErrorStringMap = {
+    [K in keyof typeof ErrorCodes]: string;
 };
+
+const errorToString: ErrorStringMap = {
+    MISSING_PERCENT_ERROR: strings.MISSING_PERCENT_ERROR,
+    NEEDS_TO_BE_SIMPLIFIED_ERROR: strings.NEEDS_TO_BE_SIMPLFIED_ERROR,
+    APPROXIMATED_PI_ERROR: strings.APPROXIMATED_PI_ERROR,
+    EXTRA_SYMBOLS_ERROR: strings.EXTRA_SYMBOLS_ERROR,
+    WRONG_CASE_ERROR: strings.WRONG_CASE_ERROR,
+    WRONG_LETTER_ERROR: strings.WRONG_LETTER_ERROR,
+    MULTIPLICATION_SIGN_ERROR: strings.MULTIPLICATION_SIGN_ERROR,
+    INVALID_SELECTION_ERROR: strings.invalidSelection,
+    CHOOSE_CORRECT_NUM_ERROR: strings.chooseCorrectNum,
+    NOT_NONE_ABOVE_ERROR: strings.notNoneOfTheAbove,
+    FILL_ALL_CELLS_ERROR: strings.fillAllCells,
+};
+
 export function mapErrorToString(err: string | null | undefined) {
     if (!err) {
         return err;
diff --git a/packages/perseus/src/types.ts b/packages/perseus/src/types.ts
index bcc52693c8..c288feb380 100644
--- a/packages/perseus/src/types.ts
+++ b/packages/perseus/src/types.ts
@@ -1,12 +1,6 @@
 import type {ILogger} from "./logging/log";
 import type {PerseusStrings} from "./strings";
 import type {SizeClass} from "./util/sizing-utils";
-import type {
-    Rubric,
-    UserInput,
-    UserInputArray,
-    UserInputMap,
-} from "./validation.types";
 import type {WidgetPromptJSON} from "./widget-ai-utils/prompt-types";
 import type getCategorizerPublicWidgetOptions from "./widgets/categorizer/categorizer.util";
 import type {KeypadAPI} from "@khanacademy/math-input";
@@ -19,6 +13,13 @@ import type {
     AnalyticsEventHandlerFn,
 } from "@khanacademy/perseus-core";
 import type {LinterContextProps} from "@khanacademy/perseus-linter";
+import type {
+    PerseusScore,
+    Rubric,
+    UserInput,
+    UserInputArray,
+    UserInputMap,
+} from "@khanacademy/perseus-score";
 import type {Result} from "@khanacademy/wonder-blocks-data";
 import type * as React from "react";
 
@@ -97,19 +98,6 @@ export type ImageDict = {
     [url: string]: Dimensions;
 };
 
-export type PerseusScore =
-    | {
-          type: "invalid";
-          message?: string | null | undefined;
-          suppressAlmostThere?: boolean | null | undefined;
-      }
-    | {
-          type: "points";
-          earned: number;
-          total: number;
-          message?: string | null | undefined;
-      };
-
 export type Version = {
     major: number;
     minor: number;
@@ -529,8 +517,6 @@ export type WidgetTransform = (
     problemNumber?: number,
 ) => any;
 
-export type ValidationResult = Extract<PerseusScore, {type: "invalid"}> | null;
-
 export type WidgetScorerFunction = (
     // The user data needed to score
     userInput: UserInput,
diff --git a/packages/perseus/src/util.ts b/packages/perseus/src/util.ts
index d1f823a169..9fcd365604 100644
--- a/packages/perseus/src/util.ts
+++ b/packages/perseus/src/util.ts
@@ -408,60 +408,6 @@ function constrainedTickStepsFromTickSteps(
     ];
 }
 
-/**
- * Approximate equality on numbers and primitives.
- */
-function eq<T>(x: T, y: T): boolean {
-    if (typeof x === "number" && typeof y === "number") {
-        return Math.abs(x - y) < 1e-9;
-    }
-    return x === y;
-}
-
-/**
- * Deep approximate equality on primitives, numbers, arrays, and objects.
- * Recursive.
- */
-function deepEq<T>(x: T, y: T): boolean {
-    if (Array.isArray(x) && Array.isArray(y)) {
-        if (x.length !== y.length) {
-            return false;
-        }
-        for (let i = 0; i < x.length; i++) {
-            if (!deepEq(x[i], y[i])) {
-                return false;
-            }
-        }
-        return true;
-    }
-    if (Array.isArray(x) || Array.isArray(y)) {
-        return false;
-    }
-    if (typeof x === "function" && typeof y === "function") {
-        return eq(x, y);
-    }
-    if (typeof x === "function" || typeof y === "function") {
-        return false;
-    }
-    if (typeof x === "object" && typeof y === "object" && !!x && !!y) {
-        return (
-            x === y ||
-            (_.all(x, function (v, k) {
-                // @ts-expect-error - TS2536 - Type 'CollectionKey<T>' cannot be used to index type 'T'.
-                return deepEq(y[k], v);
-            }) &&
-                _.all(y, function (v, k) {
-                    // @ts-expect-error - TS2536 - Type 'CollectionKey<T>' cannot be used to index type 'T'.
-                    return deepEq(x[k], v);
-                }))
-        );
-    }
-    if ((typeof x === "object" && !!x) || (typeof y === "object" && !!y)) {
-        return false;
-    }
-    return eq(x, y);
-}
-
 /**
  * Query String Parser
  *
@@ -704,23 +650,6 @@ const unescapeMathMode: (label: string) => string = (label) =>
 
 const random: RNG = seededRNG(new Date().getTime() & 0xffffffff);
 
-// TODO(benchristel): in the future, we may want to make deepClone work for
-// Record<string, Cloneable> as well. Currently, it only does arrays.
-type Cloneable =
-    | null
-    | undefined
-    | boolean
-    | string
-    | number
-    | Cloneable[]
-    | readonly Cloneable[];
-function deepClone<T extends Cloneable>(obj: T): T {
-    if (Array.isArray(obj)) {
-        return obj.map(deepClone) as T;
-    }
-    return obj;
-}
-
 const Util = {
     inputPathsEqual,
     nestedMap,
@@ -741,8 +670,6 @@ const Util = {
     gridStepFromTickStep,
     tickStepFromNumTicks,
     constrainedTickStepsFromTickSteps,
-    eq,
-    deepEq,
     parseQueryString,
     updateQueryString,
     strongEncodeURIComponent,
@@ -761,7 +688,6 @@ const Util = {
     textarea,
     unescapeMathMode,
     random,
-    deepClone,
 } as const;
 
 export default Util;
diff --git a/packages/perseus/src/util/interactive.ts b/packages/perseus/src/util/interactive.ts
index 9c35fbf3fc..7724c82720 100644
--- a/packages/perseus/src/util/interactive.ts
+++ b/packages/perseus/src/util/interactive.ts
@@ -13,6 +13,7 @@ import {
     point as kpoint,
     line as kline,
     KhanMath,
+    geometry,
 } from "@khanacademy/kmath";
 import {Errors, PerseusError} from "@khanacademy/perseus-core";
 import $ from "jquery";
@@ -29,13 +30,14 @@ import WrappedEllipse from "../interactive2/wrapped-ellipse";
 import WrappedLine from "../interactive2/wrapped-line";
 
 import KhanColors from "./colors";
-import {clockwise, reverseVector} from "./geometry";
 import GraphUtils, {polar} from "./graphie";
 
 import type {Coord} from "../interactive2/types";
 
 export type MouseHandler = (position: Coord) => void;
 
+const {clockwise, reverseVector} = geometry;
+
 function scaledDistanceFromAngle(angle: number) {
     const a = 3.51470560176242 * 20;
     const b = 0.5687298702748785 * 20;
diff --git a/packages/perseus/src/util/is-real-json-parse.ts b/packages/perseus/src/util/is-real-json-parse.ts
index 548f17518a..073a425d66 100644
--- a/packages/perseus/src/util/is-real-json-parse.ts
+++ b/packages/perseus/src/util/is-real-json-parse.ts
@@ -1,6 +1,4 @@
-import Util from "../util";
-
-const deepEq = Util.deepEq;
+import {approximateDeepEqual} from "@khanacademy/perseus-core";
 
 export function isRealJSONParse(jsonParse: typeof JSON.parse): boolean {
     const randomPhrase = buildRandomPhrase();
@@ -55,7 +53,7 @@ export function isRealJSONParse(jsonParse: typeof JSON.parse): boolean {
     const parsedTestJSON = jsonParse(testJSON);
     const parsedTestItemData: string =
         parsedTestJSON.data.assessmentItem.item.itemData;
-    return deepEq(parsedTestItemData, testingObject);
+    return approximateDeepEqual(parsedTestItemData, testingObject);
 }
 
 function buildRandomString(capitalize: boolean = false) {
diff --git a/packages/perseus/src/util/scoring.ts b/packages/perseus/src/util/scoring.ts
index b66af9c8f8..2c55b4c2d0 100644
--- a/packages/perseus/src/util/scoring.ts
+++ b/packages/perseus/src/util/scoring.ts
@@ -1,8 +1,7 @@
 import {Errors, PerseusError} from "@khanacademy/perseus-core";
 
-import type {PerseusScore} from "../types";
-import type {UserInputArray} from "../validation.types";
 import type {KEScore} from "@khanacademy/perseus-core";
+import type {PerseusScore, UserInputArray} from "@khanacademy/perseus-score";
 
 const noScore: PerseusScore = {
     type: "points",
diff --git a/packages/perseus/src/util/test-utils.ts b/packages/perseus/src/util/test-utils.ts
index be236562c8..342ff61176 100644
--- a/packages/perseus/src/util/test-utils.ts
+++ b/packages/perseus/src/util/test-utils.ts
@@ -1,8 +1,6 @@
 import {scorePerseusItem} from "../renderer-util";
 import {mockStrings} from "../strings";
 
-import type {PerseusScore} from "../types";
-import type {UserInputMap} from "../validation.types";
 import type {
     CategorizerWidget,
     ExpressionWidget,
@@ -12,6 +10,7 @@ import type {
     PerseusRenderer,
     RadioWidget,
 } from "@khanacademy/perseus-core";
+import type {PerseusScore, UserInputMap} from "@khanacademy/perseus-score";
 
 export const genericPerseusItemData: PerseusItem = {
     question: {
diff --git a/packages/perseus/src/widget-ai-utils/categorizer/categorizer-ai-utils.test.ts b/packages/perseus/src/widget-ai-utils/categorizer/categorizer-ai-utils.test.ts
index dd9521f9e6..6aa9cdff5a 100644
--- a/packages/perseus/src/widget-ai-utils/categorizer/categorizer-ai-utils.test.ts
+++ b/packages/perseus/src/widget-ai-utils/categorizer/categorizer-ai-utils.test.ts
@@ -7,8 +7,8 @@ import {renderQuestion} from "../../widgets/__testutils__/renderQuestion";
 
 import {getPromptJSON} from "./categorizer-ai-utils";
 
-import type {PerseusCategorizerUserInput} from "../../validation.types";
 import type {PerseusRenderer} from "@khanacademy/perseus-core";
+import type {PerseusCategorizerUserInput} from "@khanacademy/perseus-score";
 import type {UserEvent} from "@testing-library/user-event";
 
 const randomizedQuestion: PerseusRenderer = {
diff --git a/packages/perseus/src/widget-ai-utils/categorizer/categorizer-ai-utils.ts b/packages/perseus/src/widget-ai-utils/categorizer/categorizer-ai-utils.ts
index 0d69e5102c..51227a6ba6 100644
--- a/packages/perseus/src/widget-ai-utils/categorizer/categorizer-ai-utils.ts
+++ b/packages/perseus/src/widget-ai-utils/categorizer/categorizer-ai-utils.ts
@@ -1,5 +1,5 @@
-import type {PerseusCategorizerUserInput} from "../../validation.types";
 import type categorizer from "../../widgets/categorizer/categorizer";
+import type {PerseusCategorizerUserInput} from "@khanacademy/perseus-score";
 import type React from "react";
 
 export type CategorizerPromptJSON = {
diff --git a/packages/perseus/src/widget-ai-utils/dropdown/dropdown-ai-utils.test.ts b/packages/perseus/src/widget-ai-utils/dropdown/dropdown-ai-utils.test.ts
index 79a49dc0bc..e9267f58da 100644
--- a/packages/perseus/src/widget-ai-utils/dropdown/dropdown-ai-utils.test.ts
+++ b/packages/perseus/src/widget-ai-utils/dropdown/dropdown-ai-utils.test.ts
@@ -5,8 +5,8 @@ import {renderQuestion} from "../../widgets/__testutils__/renderQuestion";
 
 import {getPromptJSON} from "./dropdown-ai-utils";
 
-import type {PerseusDropdownUserInput} from "../../validation.types";
 import type {PerseusRenderer} from "@khanacademy/perseus-core";
+import type {PerseusDropdownUserInput} from "@khanacademy/perseus-score";
 import type {UserEvent} from "@testing-library/user-event";
 
 const question1: PerseusRenderer = {
diff --git a/packages/perseus/src/widget-ai-utils/dropdown/dropdown-ai-utils.ts b/packages/perseus/src/widget-ai-utils/dropdown/dropdown-ai-utils.ts
index 501ac1fb83..cdfd76f813 100644
--- a/packages/perseus/src/widget-ai-utils/dropdown/dropdown-ai-utils.ts
+++ b/packages/perseus/src/widget-ai-utils/dropdown/dropdown-ai-utils.ts
@@ -1,5 +1,5 @@
-import type {PerseusDropdownUserInput} from "../../validation.types";
 import type dropdown from "../../widgets/dropdown/dropdown";
+import type {PerseusDropdownUserInput} from "@khanacademy/perseus-score";
 import type React from "react";
 
 export type DropdownPromptJSON = {
diff --git a/packages/perseus/src/widget-ai-utils/expression/expression-ai-utils.ts b/packages/perseus/src/widget-ai-utils/expression/expression-ai-utils.ts
index b1d1171707..20fc757091 100644
--- a/packages/perseus/src/widget-ai-utils/expression/expression-ai-utils.ts
+++ b/packages/perseus/src/widget-ai-utils/expression/expression-ai-utils.ts
@@ -1,5 +1,5 @@
-import type {PerseusExpressionUserInput} from "../../validation.types";
 import type expression from "../../widgets/expression/expression";
+import type {PerseusExpressionUserInput} from "@khanacademy/perseus-score";
 import type React from "react";
 
 export type ExpressionPromptJSON = {
diff --git a/packages/perseus/src/widget-ai-utils/grapher/grapher-ai-utils.ts b/packages/perseus/src/widget-ai-utils/grapher/grapher-ai-utils.ts
index 1fde7b63b2..4b95040057 100644
--- a/packages/perseus/src/widget-ai-utils/grapher/grapher-ai-utils.ts
+++ b/packages/perseus/src/widget-ai-utils/grapher/grapher-ai-utils.ts
@@ -1,6 +1,6 @@
-import type {PerseusGrapherUserInput} from "../../validation.types";
 import type grapher from "../../widgets/grapher/grapher";
 import type {GrapherAnswerTypes} from "@khanacademy/perseus-core";
+import type {PerseusGrapherUserInput} from "@khanacademy/perseus-score";
 import type React from "react";
 
 export type GrapherPromptJSON = {
diff --git a/packages/perseus/src/widget-ai-utils/input-number/input-number-ai-utils.test.ts b/packages/perseus/src/widget-ai-utils/input-number/input-number-ai-utils.test.ts
index fae736a7fd..4948b8ef7b 100644
--- a/packages/perseus/src/widget-ai-utils/input-number/input-number-ai-utils.test.ts
+++ b/packages/perseus/src/widget-ai-utils/input-number/input-number-ai-utils.test.ts
@@ -5,11 +5,11 @@ import {renderQuestion} from "../../widgets/__testutils__/renderQuestion";
 
 import {getPromptJSON} from "./input-number-ai-utils";
 
-import type {PerseusInputNumberUserInput} from "../../validation.types";
 import type {
     InputNumberWidget,
     PerseusRenderer,
 } from "@khanacademy/perseus-core";
+import type {PerseusInputNumberUserInput} from "@khanacademy/perseus-score";
 import type {UserEvent} from "@testing-library/user-event";
 
 const question: PerseusRenderer = {
diff --git a/packages/perseus/src/widget-ai-utils/input-number/input-number-ai-utils.ts b/packages/perseus/src/widget-ai-utils/input-number/input-number-ai-utils.ts
index 5b21df604c..8a62685233 100644
--- a/packages/perseus/src/widget-ai-utils/input-number/input-number-ai-utils.ts
+++ b/packages/perseus/src/widget-ai-utils/input-number/input-number-ai-utils.ts
@@ -1,5 +1,5 @@
-import type {PerseusInputNumberUserInput} from "../../validation.types";
 import type inputNumber from "../../widgets/input-number/input-number";
+import type {PerseusInputNumberUserInput} from "@khanacademy/perseus-score";
 import type React from "react";
 
 export type InputNumberPromptJSON = {
diff --git a/packages/perseus/src/widget-ai-utils/label-image/label-image-ai-utils.ts b/packages/perseus/src/widget-ai-utils/label-image/label-image-ai-utils.ts
index fc7a56f546..91532bd2e9 100644
--- a/packages/perseus/src/widget-ai-utils/label-image/label-image-ai-utils.ts
+++ b/packages/perseus/src/widget-ai-utils/label-image/label-image-ai-utils.ts
@@ -1,5 +1,5 @@
-import type {PerseusLabelImageUserInput} from "../../validation.types";
 import type labelImage from "../../widgets/label-image/label-image";
+import type {PerseusLabelImageUserInput} from "@khanacademy/perseus-score";
 import type React from "react";
 
 type BaseMarker = {
diff --git a/packages/perseus/src/widget-ai-utils/matcher/matcher-ai-utils.test.tsx b/packages/perseus/src/widget-ai-utils/matcher/matcher-ai-utils.test.tsx
index 95ba6e1736..82033cff9b 100644
--- a/packages/perseus/src/widget-ai-utils/matcher/matcher-ai-utils.test.tsx
+++ b/packages/perseus/src/widget-ai-utils/matcher/matcher-ai-utils.test.tsx
@@ -7,8 +7,8 @@ import {renderQuestion} from "../../widgets/__testutils__/renderQuestion";
 
 import {getPromptJSON} from "./matcher-ai-utils";
 
-import type {PerseusMatcherUserInput} from "../../validation.types";
 import type {PerseusRenderer} from "@khanacademy/perseus-core";
+import type {PerseusMatcherUserInput} from "@khanacademy/perseus-score";
 
 const question1: PerseusRenderer = {
     content:
diff --git a/packages/perseus/src/widget-ai-utils/matcher/matcher-ai-utils.ts b/packages/perseus/src/widget-ai-utils/matcher/matcher-ai-utils.ts
index 75fef76d7e..bc274e9945 100644
--- a/packages/perseus/src/widget-ai-utils/matcher/matcher-ai-utils.ts
+++ b/packages/perseus/src/widget-ai-utils/matcher/matcher-ai-utils.ts
@@ -1,5 +1,5 @@
-import type {PerseusMatcherUserInput} from "../../validation.types";
 import type matcher from "../../widgets/matcher/matcher";
+import type {PerseusMatcherUserInput} from "@khanacademy/perseus-score";
 import type React from "react";
 
 export type MatcherPromptJSON = {
diff --git a/packages/perseus/src/widget-ai-utils/matrix/matrix-ai-utils.ts b/packages/perseus/src/widget-ai-utils/matrix/matrix-ai-utils.ts
index 4e3cc1bb48..b6409dece3 100644
--- a/packages/perseus/src/widget-ai-utils/matrix/matrix-ai-utils.ts
+++ b/packages/perseus/src/widget-ai-utils/matrix/matrix-ai-utils.ts
@@ -1,5 +1,5 @@
-import type {PerseusMatrixUserInput} from "../../validation.types";
 import type matrix from "../../widgets/matrix/matrix";
+import type {PerseusMatrixUserInput} from "@khanacademy/perseus-score";
 import type React from "react";
 
 export type MatrixPromptJSON = {
diff --git a/packages/perseus/src/widget-ai-utils/mock-widget/prompt-utils.test.ts b/packages/perseus/src/widget-ai-utils/mock-widget/prompt-utils.test.ts
index 5756b861dd..f9236e652e 100644
--- a/packages/perseus/src/widget-ai-utils/mock-widget/prompt-utils.test.ts
+++ b/packages/perseus/src/widget-ai-utils/mock-widget/prompt-utils.test.ts
@@ -1,6 +1,6 @@
 import {getPromptJSON} from "./prompt-utils";
 
-import type {PerseusMockWidgetUserInput} from "../../validation.types";
+import type {PerseusMockWidgetUserInput} from "@khanacademy/perseus-score";
 
 describe("InputNumber getPromptJSON", () => {
     it("it returns JSON with the expected format and fields", () => {
diff --git a/packages/perseus/src/widget-ai-utils/mock-widget/prompt-utils.ts b/packages/perseus/src/widget-ai-utils/mock-widget/prompt-utils.ts
index 72ba6ac657..4773ff7ef6 100644
--- a/packages/perseus/src/widget-ai-utils/mock-widget/prompt-utils.ts
+++ b/packages/perseus/src/widget-ai-utils/mock-widget/prompt-utils.ts
@@ -1,5 +1,5 @@
-import type {PerseusMockWidgetUserInput} from "../../validation.types";
 import type mockWidget from "../../widgets/mock-widgets/mock-widget";
+import type {PerseusMockWidgetUserInput} from "@khanacademy/perseus-score";
 import type React from "react";
 
 export type MockWidgetPromptJSON = {
diff --git a/packages/perseus/src/widget-ai-utils/number-line/number-line-ai-utils.ts b/packages/perseus/src/widget-ai-utils/number-line/number-line-ai-utils.ts
index 79ccf57fd3..5d8f4ee522 100644
--- a/packages/perseus/src/widget-ai-utils/number-line/number-line-ai-utils.ts
+++ b/packages/perseus/src/widget-ai-utils/number-line/number-line-ai-utils.ts
@@ -1,5 +1,5 @@
-import type {PerseusNumberLineUserInput} from "../../validation.types";
 import type numberLine from "../../widgets/number-line/number-line";
+import type {PerseusNumberLineUserInput} from "@khanacademy/perseus-score";
 import type React from "react";
 
 export type NumberLinePromptJSON = {
diff --git a/packages/perseus/src/widget-ai-utils/numeric-input/prompt-utils.test.ts b/packages/perseus/src/widget-ai-utils/numeric-input/prompt-utils.test.ts
index 87522e6064..bea3f8f823 100644
--- a/packages/perseus/src/widget-ai-utils/numeric-input/prompt-utils.test.ts
+++ b/packages/perseus/src/widget-ai-utils/numeric-input/prompt-utils.test.ts
@@ -1,6 +1,6 @@
 import {getPromptJSON} from "./prompt-utils";
 
-import type {PerseusNumericInputUserInput} from "../../validation.types";
+import type {PerseusNumericInputUserInput} from "@khanacademy/perseus-score";
 
 describe("NumericInput getPromptJSON", () => {
     it("it returns JSON with the expected format and fields", () => {
diff --git a/packages/perseus/src/widget-ai-utils/numeric-input/prompt-utils.ts b/packages/perseus/src/widget-ai-utils/numeric-input/prompt-utils.ts
index 7472abc80c..974d14d3df 100644
--- a/packages/perseus/src/widget-ai-utils/numeric-input/prompt-utils.ts
+++ b/packages/perseus/src/widget-ai-utils/numeric-input/prompt-utils.ts
@@ -1,5 +1,5 @@
-import type {PerseusNumericInputUserInput} from "../../validation.types";
 import type numericInput from "../../widgets/numeric-input/numeric-input";
+import type {PerseusNumericInputUserInput} from "@khanacademy/perseus-score";
 import type React from "react";
 
 export type NumericInputPromptJSON = {
diff --git a/packages/perseus/src/widget-ai-utils/orderer/orderer-ai-utils.ts b/packages/perseus/src/widget-ai-utils/orderer/orderer-ai-utils.ts
index e4ab89d1a5..43f7890042 100644
--- a/packages/perseus/src/widget-ai-utils/orderer/orderer-ai-utils.ts
+++ b/packages/perseus/src/widget-ai-utils/orderer/orderer-ai-utils.ts
@@ -1,5 +1,5 @@
-import type {PerseusOrdererUserInput} from "../../validation.types";
 import type orderer from "../../widgets/orderer/orderer";
+import type {PerseusOrdererUserInput} from "@khanacademy/perseus-score";
 import type React from "react";
 
 export type OrdererPromptJSON = {
diff --git a/packages/perseus/src/widget-ai-utils/radio/radio-ai-utils.test.ts b/packages/perseus/src/widget-ai-utils/radio/radio-ai-utils.test.ts
index 02f5750327..1b879bc946 100644
--- a/packages/perseus/src/widget-ai-utils/radio/radio-ai-utils.test.ts
+++ b/packages/perseus/src/widget-ai-utils/radio/radio-ai-utils.test.ts
@@ -7,8 +7,8 @@ import {renderQuestion} from "../../widgets/__testutils__/renderQuestion";
 
 import {getPromptJSON} from "./radio-ai-utils";
 
-import type {PerseusRadioUserInput} from "../../validation.types";
 import type {PerseusRenderer, RadioWidget} from "@khanacademy/perseus-core";
+import type {PerseusRadioUserInput} from "@khanacademy/perseus-score";
 import type {UserEvent} from "@testing-library/user-event";
 
 const shuffledQuestion: PerseusRenderer = {
diff --git a/packages/perseus/src/widget-ai-utils/radio/radio-ai-utils.ts b/packages/perseus/src/widget-ai-utils/radio/radio-ai-utils.ts
index 611685112c..b0eaa1f020 100644
--- a/packages/perseus/src/widget-ai-utils/radio/radio-ai-utils.ts
+++ b/packages/perseus/src/widget-ai-utils/radio/radio-ai-utils.ts
@@ -1,5 +1,5 @@
-import type {PerseusRadioUserInput} from "../../validation.types";
 import type radio from "../../widgets/radio/radio";
+import type {PerseusRadioUserInput} from "@khanacademy/perseus-score";
 import type React from "react";
 
 export type BasicOption = {
diff --git a/packages/perseus/src/widget-ai-utils/sorter/sorter-ai-utils.test.ts b/packages/perseus/src/widget-ai-utils/sorter/sorter-ai-utils.test.ts
index 6d8fa17169..67744c008e 100644
--- a/packages/perseus/src/widget-ai-utils/sorter/sorter-ai-utils.test.ts
+++ b/packages/perseus/src/widget-ai-utils/sorter/sorter-ai-utils.test.ts
@@ -1,6 +1,6 @@
 import {getPromptJSON} from "./sorter-ai-utils";
 
-import type {PerseusSorterUserInput} from "../../validation.types";
+import type {PerseusSorterUserInput} from "@khanacademy/perseus-score";
 
 describe("Sorter AI utils", () => {
     it("it returns JSON with the expected format and fields", () => {
diff --git a/packages/perseus/src/widget-ai-utils/sorter/sorter-ai-utils.ts b/packages/perseus/src/widget-ai-utils/sorter/sorter-ai-utils.ts
index 6fdd1670c0..05cbb5d96a 100644
--- a/packages/perseus/src/widget-ai-utils/sorter/sorter-ai-utils.ts
+++ b/packages/perseus/src/widget-ai-utils/sorter/sorter-ai-utils.ts
@@ -1,4 +1,4 @@
-import type {PerseusSorterUserInput} from "../../validation.types";
+import type {PerseusSorterUserInput} from "@khanacademy/perseus-score";
 
 export type SorterPromptJSON = {
     type: "sorter";
diff --git a/packages/perseus/src/widgets/__shared__/score-noop.ts b/packages/perseus/src/widgets/__shared__/score-noop.ts
index 1fe77e1dab..6896b95418 100644
--- a/packages/perseus/src/widgets/__shared__/score-noop.ts
+++ b/packages/perseus/src/widgets/__shared__/score-noop.ts
@@ -1,4 +1,4 @@
-import type {PerseusScore} from "../../types";
+import type {PerseusScore} from "@khanacademy/perseus-score";
 
 /**
  * Several widgets don't have "right"/"wrong" scoring logic,
diff --git a/packages/perseus/src/widgets/categorizer/categorizer.test.ts b/packages/perseus/src/widgets/categorizer/categorizer.test.ts
index faffac1441..d2dcdeb02a 100644
--- a/packages/perseus/src/widgets/categorizer/categorizer.test.ts
+++ b/packages/perseus/src/widgets/categorizer/categorizer.test.ts
@@ -70,7 +70,7 @@ describe("categorizer widget", () => {
         // Assert
         expect(score).toMatchInlineSnapshot(`
             {
-              "message": "Make sure you select something for every row.",
+              "message": "INVALID_SELECTION_ERROR",
               "type": "invalid",
             }
         `);
@@ -94,7 +94,7 @@ describe("categorizer widget", () => {
         // assert
         expect(score).toMatchInlineSnapshot(`
             {
-              "message": "Make sure you select something for every row.",
+              "message": "INVALID_SELECTION_ERROR",
               "type": "invalid",
             }
         `);
diff --git a/packages/perseus/src/widgets/categorizer/categorizer.tsx b/packages/perseus/src/widgets/categorizer/categorizer.tsx
index ab4c47e366..c9b4d9ab96 100644
--- a/packages/perseus/src/widgets/categorizer/categorizer.tsx
+++ b/packages/perseus/src/widgets/categorizer/categorizer.tsx
@@ -1,5 +1,6 @@
 /* eslint-disable @khanacademy/ts-no-error-suppressions */
 import {linterContextDefault} from "@khanacademy/perseus-linter";
+import {scoreCategorizer} from "@khanacademy/perseus-score";
 import {StyleSheet, css} from "aphrodite";
 import classNames from "classnames";
 import * as React from "react";
@@ -17,15 +18,14 @@ import Util from "../../util";
 import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/categorizer/categorizer-ai-utils";
 
 import getCategorizerPublicWidgetOptions from "./categorizer.util";
-import scoreCategorizer from "./score-categorizer";
 
 import type {Widget, WidgetExports, WidgetProps} from "../../types";
+import type {CategorizerPromptJSON} from "../../widget-ai-utils/categorizer/categorizer-ai-utils";
+import type {PerseusCategorizerWidgetOptions} from "@khanacademy/perseus-core";
 import type {
     PerseusCategorizerScoringData,
     PerseusCategorizerUserInput,
-} from "../../validation.types";
-import type {CategorizerPromptJSON} from "../../widget-ai-utils/categorizer/categorizer-ai-utils";
-import type {PerseusCategorizerWidgetOptions} from "@khanacademy/perseus-core";
+} from "@khanacademy/perseus-score";
 
 type Props = WidgetProps<RenderProps, PerseusCategorizerScoringData> & {
     values: ReadonlyArray<string>;
diff --git a/packages/perseus/src/widgets/cs-program/cs-program.test.ts b/packages/perseus/src/widgets/cs-program/cs-program.test.ts
index 89f9ab8699..7a47a73ece 100644
--- a/packages/perseus/src/widgets/cs-program/cs-program.test.ts
+++ b/packages/perseus/src/widgets/cs-program/cs-program.test.ts
@@ -4,7 +4,7 @@ import {renderQuestion} from "../__testutils__/renderQuestion";
 
 import {question1} from "./cs-program.testdata";
 
-import type {PerseusCSProgramUserInput} from "../../validation.types";
+import type {PerseusCSProgramUserInput} from "@khanacademy/perseus-score";
 
 describe("cs-program widget", () => {
     beforeEach(() => {
diff --git a/packages/perseus/src/widgets/cs-program/cs-program.tsx b/packages/perseus/src/widgets/cs-program/cs-program.tsx
index c4c1755106..41dda4b33c 100644
--- a/packages/perseus/src/widgets/cs-program/cs-program.tsx
+++ b/packages/perseus/src/widgets/cs-program/cs-program.tsx
@@ -2,6 +2,11 @@
  * This widget is for embedding Khan Academy CS programs.
  */
 
+import {
+    scoreCSProgram,
+    type PerseusCSProgramRubric,
+    type PerseusCSProgramUserInput,
+} from "@khanacademy/perseus-score";
 import {StyleSheet, css} from "aphrodite";
 import $ from "jquery";
 import * as React from "react";
@@ -15,13 +20,7 @@ import {isFileProtocol} from "../../util/mobile-native-utils";
 import {toAbsoluteUrl} from "../../util/url-utils";
 import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/cs-program/cs-program-ai-utils";
 
-import scoreCSProgram from "./score-cs-program";
-
 import type {Widget, WidgetExports, WidgetProps} from "../../types";
-import type {
-    PerseusCSProgramRubric,
-    PerseusCSProgramUserInput,
-} from "../../validation.types";
 import type {UnsupportedWidgetPromptJSON} from "../../widget-ai-utils/unsupported-widget";
 import type {PerseusCSProgramWidgetOptions} from "@khanacademy/perseus-core";
 
diff --git a/packages/perseus/src/widgets/dropdown/dropdown.tsx b/packages/perseus/src/widgets/dropdown/dropdown.tsx
index 58f18352ca..7a4356a5db 100644
--- a/packages/perseus/src/widgets/dropdown/dropdown.tsx
+++ b/packages/perseus/src/widgets/dropdown/dropdown.tsx
@@ -1,3 +1,4 @@
+import {scoreDropdown} from "@khanacademy/perseus-score";
 import {Id, View} from "@khanacademy/wonder-blocks-core";
 import {SingleSelect, OptionItem} from "@khanacademy/wonder-blocks-dropdown";
 import {LabelLarge} from "@khanacademy/wonder-blocks-typography";
@@ -9,15 +10,13 @@ import {ApiOptions} from "../../perseus-api";
 import Renderer from "../../renderer";
 import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/dropdown/dropdown-ai-utils";
 
-import scoreDropdown from "./score-dropdown";
-
 import type {Widget, WidgetExports, WidgetProps} from "../../types";
+import type {DropdownPromptJSON} from "../../widget-ai-utils/dropdown/dropdown-ai-utils";
+import type {PerseusDropdownWidgetOptions} from "@khanacademy/perseus-core";
 import type {
     PerseusDropdownRubric,
     PerseusDropdownUserInput,
-} from "../../validation.types";
-import type {DropdownPromptJSON} from "../../widget-ai-utils/dropdown/dropdown-ai-utils";
-import type {PerseusDropdownWidgetOptions} from "@khanacademy/perseus-core";
+} from "@khanacademy/perseus-score";
 
 type Props = WidgetProps<RenderProps, PerseusDropdownRubric> & {
     selected: number;
diff --git a/packages/perseus/src/widgets/expression/expression.tsx b/packages/perseus/src/widgets/expression/expression.tsx
index c8650fbe9c..483148acd7 100644
--- a/packages/perseus/src/widgets/expression/expression.tsx
+++ b/packages/perseus/src/widgets/expression/expression.tsx
@@ -1,6 +1,15 @@
 import * as KAS from "@khanacademy/kas";
 import {KeyArray, KeypadInput, KeypadType} from "@khanacademy/math-input";
+import {
+    getDecimalSeparator,
+    type PerseusExpressionWidgetOptions,
+} from "@khanacademy/perseus-core";
 import {linterContextDefault} from "@khanacademy/perseus-linter";
+import {
+    scoreExpression,
+    type PerseusExpressionRubric,
+    type PerseusExpressionUserInput,
+} from "@khanacademy/perseus-score";
 import {View} from "@khanacademy/wonder-blocks-core";
 import Tooltip from "@khanacademy/wonder-blocks-tooltip";
 import {LabelSmall} from "@khanacademy/wonder-blocks-typography";
@@ -18,18 +27,10 @@ import {ApiOptions, ClassNames as ApiClassNames} from "../../perseus-api";
 import a11y from "../../util/a11y";
 import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/expression/expression-ai-utils";
 
-import getDecimalSeparator from "./get-decimal-separator";
-import scoreExpression from "./score-expression";
-
 import type {DependenciesContext} from "../../dependencies";
 import type {FocusPath, Widget, WidgetExports, WidgetProps} from "../../types";
-import type {
-    PerseusExpressionRubric,
-    PerseusExpressionUserInput,
-} from "../../validation.types";
 import type {ExpressionPromptJSON} from "../../widget-ai-utils/expression/expression-ai-utils";
 import type {Keys as Key, KeypadConfiguration} from "@khanacademy/math-input";
-import type {PerseusExpressionWidgetOptions} from "@khanacademy/perseus-core";
 import type {PropsFor} from "@khanacademy/wonder-blocks-core";
 
 type InputPath = ReadonlyArray<string>;
diff --git a/packages/perseus/src/widgets/graded-group-set/graded-group-set.tsx b/packages/perseus/src/widgets/graded-group-set/graded-group-set.tsx
index f3bb653a3a..e2c259a286 100644
--- a/packages/perseus/src/widgets/graded-group-set/graded-group-set.tsx
+++ b/packages/perseus/src/widgets/graded-group-set/graded-group-set.tsx
@@ -21,12 +21,12 @@ import {getPromptJSON} from "../../widget-ai-utils/graded-group-set/graded-group
 import {GradedGroup} from "../graded-group/graded-group";
 
 import type {FocusPath, Widget, WidgetExports, WidgetProps} from "../../types";
-import type {PerseusGradedGroupSetRubric} from "../../validation.types";
 import type {GradedGroupSetPromptJSON} from "../../widget-ai-utils/graded-group-set/graded-group-set-ai-utils";
 import type {
     PerseusGradedGroupSetWidgetOptions,
     PerseusGradedGroupWidgetOptions,
 } from "@khanacademy/perseus-core";
+import type {PerseusGradedGroupSetRubric} from "@khanacademy/perseus-score";
 
 type IndicatorsProps = {
     currentGroup: number;
diff --git a/packages/perseus/src/widgets/graded-group/graded-group.tsx b/packages/perseus/src/widgets/graded-group/graded-group.tsx
index 97052b5365..c06c09c3df 100644
--- a/packages/perseus/src/widgets/graded-group/graded-group.tsx
+++ b/packages/perseus/src/widgets/graded-group/graded-group.tsx
@@ -29,15 +29,17 @@ import GradedGroupAnswerBar from "./graded-group-answer-bar";
 import type {ANSWER_BAR_STATES} from "./graded-group-answer-bar";
 import type {
     FocusPath,
-    PerseusScore,
     TrackingGradedGroupExtraArguments,
     Widget,
     WidgetExports,
     WidgetProps,
 } from "../../types";
-import type {PerseusGradedGroupRubric} from "../../validation.types";
 import type {GradedGroupPromptJSON} from "../../widget-ai-utils/graded-group/graded-group-ai-utils";
 import type {PerseusGradedGroupWidgetOptions} from "@khanacademy/perseus-core";
+import type {
+    PerseusGradedGroupRubric,
+    PerseusScore,
+} from "@khanacademy/perseus-score";
 import type {PropsFor} from "@khanacademy/wonder-blocks-core";
 
 const GRADING_STATUSES = {
diff --git a/packages/perseus/src/widgets/grapher/grapher.tsx b/packages/perseus/src/widgets/grapher/grapher.tsx
index 94db2c0887..f7e7f3e0f8 100644
--- a/packages/perseus/src/widgets/grapher/grapher.tsx
+++ b/packages/perseus/src/widgets/grapher/grapher.tsx
@@ -3,6 +3,12 @@ import {
     vector as kvector,
     point as kpoint,
 } from "@khanacademy/kmath";
+import {GrapherUtil} from "@khanacademy/perseus-core";
+import {
+    scoreGrapher,
+    type PerseusGrapherRubric,
+    type PerseusGrapherUserInput,
+} from "@khanacademy/perseus-score";
 import * as React from "react";
 import _ from "underscore";
 
@@ -20,14 +26,13 @@ import {getInteractiveBoxFromSizeClass} from "../../util/sizing-utils";
 /* Mixins. */
 import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/grapher/grapher-ai-utils";
 
-import scoreGrapher from "./score-grapher";
 import {
     DEFAULT_GRAPHER_PROPS,
     chooseType,
     defaultPlotProps,
-    functionForType,
     getGridAndSnapSteps,
     maybePointsFromNormalized,
+    movableTypeToComponent,
     typeToButton,
 } from "./util";
 
@@ -35,10 +40,6 @@ import type {Coord, Line} from "../../interactive2/types";
 import type {ChangeableProps} from "../../mixins/changeable";
 import type {Widget, WidgetExports, WidgetProps} from "../../types";
 import type {GridDimensions} from "../../util";
-import type {
-    PerseusGrapherRubric,
-    PerseusGrapherUserInput,
-} from "../../validation.types";
 import type {GrapherPromptJSON} from "../../widget-ai-utils/grapher/grapher-ai-utils";
 import type {
     MarkingsType,
@@ -137,8 +138,9 @@ class FunctionGrapher extends React.Component<FunctionGrapherProps> {
         }
 
         const functionProps = model.getPropsForCoeffs(coeffs, xRange);
+        const Movable = movableTypeToComponent[model.movable];
         return (
-            <model.Movable
+            <Movable
                 {...functionProps}
                 key={this.props.model.url}
                 range={xRange}
@@ -595,7 +597,7 @@ class Grapher extends React.Component<Props> implements Widget {
                 setup: this._setupGraphie,
             },
             onChange: this.handlePlotChanges,
-            model: type && functionForType(type),
+            model: type && GrapherUtil.functionForType(type),
             coords: coords,
             asymptote: asymptote,
             static: this.props.static,
diff --git a/packages/perseus/src/widgets/grapher/util.tsx b/packages/perseus/src/widgets/grapher/util.tsx
index ed7c6af887..5d59c24a80 100644
--- a/packages/perseus/src/widgets/grapher/util.tsx
+++ b/packages/perseus/src/widgets/grapher/util.tsx
@@ -1,4 +1,5 @@
 import {point as kpoint} from "@khanacademy/kmath";
+import {GrapherUtil} from "@khanacademy/perseus-core";
 import * as React from "react";
 import _ from "underscore";
 
@@ -6,656 +7,29 @@ import Graphie from "../../components/graphie";
 import {getDependencies} from "../../dependencies";
 import Util from "../../util";
 
-import type {
-    Coords,
-    LinearType,
-    QuadraticType,
-    SinusoidType,
-    TangentType,
-    ExponentialType,
-    LogarithmType,
-    AbsoluteValueType,
-} from "./grapher-types";
 import type {Coord} from "../../interactive2/types";
+import type {FunctionTypeMappingKeys} from "@khanacademy/perseus-core";
 
-// @ts-expect-error - TS2339 - Property 'Plot' does not exist on type 'typeof Graphie'.
-const Plot = Graphie.Plot;
-
-const DEFAULT_BACKGROUND_IMAGE = {
-    url: null,
-} as const;
-
-// TODO(charlie): These really need to go into a utility file as they're being
-// used by both interactive-graph and now grapher.
-function canonicalSineCoefficients(coeffs: any) {
-    // For a curve of the form f(x) = a * Sin(b * x - c) + d,
-    // this function ensures that a, b > 0, and c is its
-    // smallest possible positive value.
-    let amplitude = coeffs[0];
-    let angularFrequency = coeffs[1];
-    let phase = coeffs[2];
-    const verticalOffset = coeffs[3];
-
-    // Guarantee a > 0
-    if (amplitude < 0) {
-        amplitude *= -1;
-        angularFrequency *= -1;
-        phase *= -1;
-    }
-
-    const period = 2 * Math.PI;
-    // Guarantee b > 0
-    if (angularFrequency < 0) {
-        angularFrequency *= -1;
-        phase *= -1;
-        phase += period / 2;
-    }
-
-    // Guarantee c is smallest possible positive value
-    while (phase > 0) {
-        phase -= period;
-    }
-    while (phase < 0) {
-        phase += period;
-    }
-
-    return [amplitude, angularFrequency, phase, verticalOffset];
-}
-
-function canonicalTangentCoefficients(coeffs: any) {
-    // For a curve of the form f(x) = a * Tan(b * x - c) + d,
-    // this function ensures that a, b > 0, and c is its
-    // smallest possible positive value.
-    let amplitude = coeffs[0];
-    let angularFrequency = coeffs[1];
-    let phase = coeffs[2];
-    const verticalOffset = coeffs[3];
-
-    // Guarantee a > 0
-    if (amplitude < 0) {
-        amplitude *= -1;
-        angularFrequency *= -1;
-        phase *= -1;
-    }
-
-    const period = Math.PI;
-    // Guarantee b > 0
-    if (angularFrequency < 0) {
-        angularFrequency *= -1;
-        phase *= -1;
-        phase += period / 2;
-    }
-
-    // Guarantee c is smallest possible positive value
-    while (phase > 0) {
-        phase -= period;
-    }
-    while (phase < 0) {
-        phase += period;
-    }
-
-    return [amplitude, angularFrequency, phase, verticalOffset];
-}
-
-const PlotDefaults = {
-    areEqual: function (
-        coeffs1: ReadonlyArray<number>,
-        coeffs2: ReadonlyArray<number>,
-    ): boolean {
-        return Util.deepEq(coeffs1, coeffs2);
-    },
-    Movable: Plot,
-    getPropsForCoeffs: function (coeffs: ReadonlyArray<number>): {fn: any} {
-        return {
-            // @ts-expect-error - TS2339 - Property 'getFunctionForCoeffs' does not exist on type '{ readonly areEqual: (coeffs1: any, coeffs2: any) => boolean; readonly Movable: any; readonly getPropsForCoeffs: (coeffs: any) => any; }'.
-            fn: _.partial(this.getFunctionForCoeffs, coeffs),
-        };
-    },
-} as const;
-
-const Linear: LinearType = _.extend({}, PlotDefaults, {
-    url: "https://ka-perseus-graphie.s3.amazonaws.com/67aaf581e6d9ef9038c10558a1f70ac21c11c9f8.png",
-
-    defaultCoords: [
-        [0.25, 0.75],
-        [0.75, 0.75],
-    ],
-
-    getCoefficients: function (
-        coords: Coords,
-    ): ReadonlyArray<number> | undefined {
-        const p1 = coords[0];
-        const p2 = coords[1];
-
-        const denom = p2[0] - p1[0];
-        const num = p2[1] - p1[1];
-
-        if (denom === 0) {
-            return;
-        }
-
-        const m = num / denom;
-        const b = p2[1] - m * p2[0];
-        return [m, b];
-    },
-
-    getFunctionForCoeffs: function (coeffs: ReadonlyArray<number>, x: number) {
-        const m = coeffs[0];
-        const b = coeffs[1];
-        return m * x + b;
-    },
-
-    getEquationString: function (coords: Coords) {
-        const coeffs: ReadonlyArray<number> = this.getCoefficients(coords);
-        const m: number = coeffs[0];
-        const b: number = coeffs[1];
-        return "y = " + m.toFixed(3) + "x + " + b.toFixed(3);
-    },
-});
-
-const Quadratic: QuadraticType = _.extend({}, PlotDefaults, {
-    url: "https://ka-perseus-graphie.s3.amazonaws.com/e23d36e6fc29ee37174e92c9daba2a66677128ab.png",
-
-    defaultCoords: [
-        [0.5, 0.5],
-        [0.75, 0.75],
-    ],
+type MovableMap = {
+    [K in keyof typeof GrapherUtil.MOVABLES]: any;
+};
+export const movableTypeToComponent: MovableMap = {
+    // @ts-expect-error - TS2339 - Property 'Plot' does not exist on type 'typeof Graphie'.
+    PLOT: Graphie.Plot,
     // @ts-expect-error - TS2339 - Property 'Parabola' does not exist on type 'typeof Graphie'.
-    Movable: Graphie.Parabola,
-
-    getCoefficients: function (coords: Coords): ReadonlyArray<number> {
-        const p1 = coords[0];
-        const p2 = coords[1];
-
-        // Parabola with vertex (h, k) has form: y = a * (h - k)^2 + k
-        const h = p1[0];
-        const k = p1[1];
-
-        // Use these to calculate familiar a, b, c
-        const a = (p2[1] - k) / ((p2[0] - h) * (p2[0] - h));
-        const b = -2 * h * a;
-        const c = a * h * h + k;
-
-        return [a, b, c];
-    },
-
-    getFunctionForCoeffs: function (
-        coeffs: ReadonlyArray<number>,
-        x: number,
-    ): number {
-        const a = coeffs[0];
-        const b = coeffs[1];
-        const c = coeffs[2];
-        return (a * x + b) * x + c;
-    },
-
-    getPropsForCoeffs: function (coeffs: ReadonlyArray<number>): {
-        a: number;
-        b: number;
-        c: number;
-    } {
-        return {
-            a: coeffs[0],
-            b: coeffs[1],
-            c: coeffs[2],
-        };
-    },
-
-    getEquationString: function (coords: Coords) {
-        const coeffs = this.getCoefficients(coords);
-        const a = coeffs[0];
-        const b = coeffs[1];
-        const c = coeffs[2];
-        return (
-            "y = " +
-            a.toFixed(3) +
-            "x^2 + " +
-            b.toFixed(3) +
-            "x + " +
-            c.toFixed(3)
-        );
-    },
-});
-
-const Sinusoid: SinusoidType = _.extend({}, PlotDefaults, {
-    url: "https://ka-perseus-graphie.s3.amazonaws.com/3d68e7718498475f53b206c2ab285626baf8857e.png",
-
-    defaultCoords: [
-        [0.5, 0.5],
-        [0.6, 0.6],
-    ],
+    PARABOLA: Graphie.Parabola,
     // @ts-expect-error - TS2339 - Property 'Sinusoid' does not exist on type 'typeof Graphie'.
-    Movable: Graphie.Sinusoid,
-
-    getCoefficients: function (coords: Coords) {
-        const p1 = coords[0];
-        const p2 = coords[1];
-
-        const a = p2[1] - p1[1];
-        const b = Math.PI / (2 * (p2[0] - p1[0]));
-        const c = p1[0] * b;
-        const d = p1[1];
-
-        return [a, b, c, d];
-    },
-
-    getFunctionForCoeffs: function (coeffs: ReadonlyArray<number>, x: number) {
-        const a = coeffs[0];
-        const b = coeffs[1];
-        const c = coeffs[2];
-        const d = coeffs[3];
-        return a * Math.sin(b * x - c) + d;
-    },
-
-    getPropsForCoeffs: function (coeffs: ReadonlyArray<number>) {
-        return {
-            a: coeffs[0],
-            b: coeffs[1],
-            c: coeffs[2],
-            d: coeffs[3],
-        };
-    },
-
-    getEquationString: function (coords: Coords) {
-        const coeffs = this.getCoefficients(coords);
-        const a = coeffs[0];
-        const b = coeffs[1];
-        const c = coeffs[2];
-        const d = coeffs[3];
-        return (
-            "y = " +
-            a.toFixed(3) +
-            " sin(" +
-            b.toFixed(3) +
-            "x - " +
-            c.toFixed(3) +
-            ") + " +
-            d.toFixed(3)
-        );
-    },
-
-    areEqual: function (
-        coeffs1: ReadonlyArray<number>,
-        coeffs2: ReadonlyArray<number>,
-    ) {
-        return Util.deepEq(
-            canonicalSineCoefficients(coeffs1),
-            canonicalSineCoefficients(coeffs2),
-        );
-    },
-});
-
-const Tangent: TangentType = _.extend({}, PlotDefaults, {
-    url: "https://ka-perseus-graphie.s3.amazonaws.com/7db80d23c35214f98659fe1cf0765811c1bbfbba.png",
-
-    defaultCoords: [
-        [0.5, 0.5],
-        [0.75, 0.75],
-    ],
-
-    getCoefficients: function (coords: Coords) {
-        const p1 = coords[0];
-        const p2 = coords[1];
-
-        const a = p2[1] - p1[1];
-        const b = Math.PI / (4 * (p2[0] - p1[0]));
-        const c = p1[0] * b;
-        const d = p1[1];
-
-        return [a, b, c, d];
-    },
-
-    getFunctionForCoeffs: function (coeffs: ReadonlyArray<number>, x: number) {
-        const a = coeffs[0];
-        const b = coeffs[1];
-        const c = coeffs[2];
-        const d = coeffs[3];
-        return a * Math.tan(b * x - c) + d;
-    },
-
-    getEquationString: function (coords: Coords) {
-        const coeffs = this.getCoefficients(coords);
-        const a = coeffs[0];
-        const b = coeffs[1];
-        const c = coeffs[2];
-        const d = coeffs[3];
-        return (
-            "y = " +
-            a.toFixed(3) +
-            " sin(" +
-            b.toFixed(3) +
-            "x - " +
-            c.toFixed(3) +
-            ") + " +
-            d.toFixed(3)
-        );
-    },
-
-    areEqual: function (
-        coeffs1: ReadonlyArray<number>,
-        coeffs2: ReadonlyArray<number>,
-    ) {
-        return Util.deepEq(
-            canonicalTangentCoefficients(coeffs1),
-            canonicalTangentCoefficients(coeffs2),
-        );
-    },
-});
-
-const Exponential: ExponentialType = _.extend({}, PlotDefaults, {
-    url: "https://ka-perseus-graphie.s3.amazonaws.com/9cbfad55525e3ce755a31a631b074670a5dad611.png",
-
-    defaultCoords: [
-        [0.5, 0.55],
-        [0.75, 0.75],
-    ],
-
-    defaultAsymptote: [
-        [0, 0.5],
-        [1.0, 0.5],
-    ],
-
-    /**
-     * Add extra constraints for movement of the points or asymptote (below):
-     *   newCoord: [x, y]
-     *     The end position of the point or asymptote endpoint
-     *   oldCoord: [x, y]
-     *     The old position of the point or asymptote endpoint
-     *   coords:
-     *     An array of coordinates representing the proposed end configuration
-     *     of the plot coordinates.
-     *   asymptote:
-     *     An array of coordinates representing the proposed end configuration
-     *     of the asymptote.
-     *
-     * Return: either a coordinate (to be used as the resulting coordinate of
-     * the move) or a boolean, where `true` uses newCoord as the resulting
-     * coordinate, and `false` uses oldCoord as the resulting coordinate.
-     */
-    extraCoordConstraint: function (
-        newCoord: Coord,
-        oldCoord: Coord,
-        coords: Coords,
-        asymptote: Coords,
-        graph,
-    ) {
-        const y: number = asymptote[0][1];
-        return _.all(coords, (coord) => coord[1] !== y);
-    },
-
-    extraAsymptoteConstraint: function (
-        newCoord: Coord,
-        oldCoord: Coord,
-        coords: Coords,
-        asymptote: Coords,
-        graph,
-    ): Coord {
-        const y = newCoord[1];
-        const isValid =
-            _.all(coords, (coord) => coord[1] > y) ||
-            _.all(coords, (coord) => coord[1] < y);
-
-        if (isValid) {
-            return [oldCoord[0], y];
-        }
-        // Snap the asymptote as close as possible, i.e., if the user moves
-        // the mouse really quickly into an invalid region
-        const oldY = oldCoord[1];
-        const wasBelow = _.all(coords, (coord) => coord[1] > oldY);
-        if (wasBelow) {
-            const bottomMost = _.min(_.map(coords, (coord) => coord[1]));
-            return [oldCoord[0], bottomMost - graph.snapStep[1]];
-        }
-        const topMost = _.max(_.map(coords, (coord) => coord[1]));
-        return [oldCoord[0], topMost + graph.snapStep[1]];
-    },
-
-    allowReflectOverAsymptote: true,
-
-    getCoefficients: function (
-        coords: Coords,
-        asymptote: Coords,
-    ): ReadonlyArray<number> {
-        const p1 = coords[0];
-        const p2 = coords[1];
-
-        const c = asymptote[0][1];
-        const b = Math.log((p1[1] - c) / (p2[1] - c)) / (p1[0] - p2[0]);
-        const a = (p1[1] - c) / Math.exp(b * p1[0]);
-        return [a, b, c];
-    },
-
-    getFunctionForCoeffs: function (
-        coeffs: ReadonlyArray<number>,
-        x: number,
-    ): number {
-        const a = coeffs[0];
-        const b = coeffs[1];
-        const c = coeffs[2];
-        return a * Math.exp(b * x) + c;
-    },
-
-    getEquationString: function (coords: Coords, asymptote: Coords) {
-        if (!asymptote) {
-            return null;
-        }
-        const coeffs = this.getCoefficients(coords, asymptote);
-        const a = coeffs[0];
-        const b = coeffs[1];
-        const c = coeffs[2];
-        return (
-            "y = " +
-            a.toFixed(3) +
-            "e^(" +
-            b.toFixed(3) +
-            "x) + " +
-            c.toFixed(3)
-        );
-    },
-});
-
-const Logarithm: LogarithmType = _.extend({}, PlotDefaults, {
-    url: "https://ka-perseus-graphie.s3.amazonaws.com/f6491e99d34af34d924bfe0231728ad912068dc3.png",
-
-    defaultCoords: [
-        [0.55, 0.5],
-        [0.75, 0.75],
-    ],
-
-    defaultAsymptote: [
-        [0.5, 0],
-        [0.5, 1.0],
-    ],
-
-    extraCoordConstraint: function (
-        newCoord: Coord,
-        oldCoord: Coord,
-        coords: Coord,
-        asymptote: Coords,
-        graph,
-    ) {
-        const x = asymptote[0][0];
-        return (
-            _.all(coords, (coord) => coord[0] !== x) &&
-            coords[0][1] !== coords[1][1]
-        );
-    },
-
-    extraAsymptoteConstraint: function (
-        newCoord: Coord,
-        oldCoord: Coord,
-        coords: Coords,
-        asymptote: Coords,
-        graph,
-    ): ReadonlyArray<number> {
-        const x = newCoord[0];
-        const isValid =
-            _.all(coords, (coord) => coord[0] > x) ||
-            _.all(coords, (coord) => coord[0] < x);
-
-        if (isValid) {
-            return [x, oldCoord[1]];
-        }
-        // Snap the asymptote as close as possible, i.e., if the user moves
-        // the mouse really quickly into an invalid region
-        const oldX = oldCoord[0];
-        const wasLeft = _.all(coords, (coord) => coord[0] > oldX);
-        if (wasLeft) {
-            const leftMost = _.min(_.map(coords, (coord) => coord[0]));
-            return [leftMost - graph.snapStep[0], oldCoord[1]];
-        }
-        const rightMost = _.max(_.map(coords, (coord) => coord[0]));
-        return [rightMost + graph.snapStep[0], oldCoord[1]];
-    },
-
-    allowReflectOverAsymptote: true,
-
-    getCoefficients: function (
-        coords: Coords,
-        asymptote: Coords,
-    ): ReadonlyArray<number> | undefined {
-        // It's easiest to calculate the logarithm's coefficients by thinking
-        // about it as the inverse of the exponential, so we flip x and y and
-        // perform some algebra on the coefficients. This also unifies the
-        // logic between the two 'models'.
-        const flip = (coord: Coord): Coord => [coord[1], coord[0]];
-        const inverseCoeffs = Exponential.getCoefficients(
-            _.map(coords, flip) as Coords,
-            _.map(asymptote, flip) as Coords,
-        );
-        if (inverseCoeffs) {
-            const c = -inverseCoeffs[2] / inverseCoeffs[0];
-            const b = 1 / inverseCoeffs[0];
-            const a = 1 / inverseCoeffs[1];
-            return [a, b, c];
-        }
-    },
-
-    getFunctionForCoeffs: function (
-        coeffs: ReadonlyArray<number>,
-        x: number,
-        asymptote: Coords,
-    ) {
-        const a = coeffs[0];
-        const b = coeffs[1];
-        const c = coeffs[2];
-        return a * Math.log(b * x + c);
-    },
-
-    getEquationString: function (coords: Coords, asymptote: Coords) {
-        if (!asymptote) {
-            return null;
-        }
-        const coeffs: ReadonlyArray<number> = this.getCoefficients(
-            coords,
-            asymptote,
-        );
-        const a = coeffs[0];
-        const b = coeffs[1];
-        const c = coeffs[2];
-        return (
-            "y = ln(" +
-            a.toFixed(3) +
-            "x + " +
-            b.toFixed(3) +
-            ") + " +
-            c.toFixed(3)
-        );
-    },
-});
-
-const AbsoluteValue: AbsoluteValueType = _.extend({}, PlotDefaults, {
-    url: "https://ka-perseus-graphie.s3.amazonaws.com/8256a630175a0cb1d11de223d6de0266daf98721.png",
-
-    defaultCoords: [
-        [0.5, 0.5],
-        [0.75, 0.75],
-    ],
-
-    getCoefficients: function (
-        coords: Coords,
-    ): ReadonlyArray<number> | undefined {
-        const p1 = coords[0];
-        const p2 = coords[1];
-
-        const denom = p2[0] - p1[0];
-        const num = p2[1] - p1[1];
-
-        if (denom === 0) {
-            return;
-        }
-
-        let m = Math.abs(num / denom);
-        if (p2[1] < p1[1]) {
-            m *= -1;
-        }
-        const horizontalOffset = p1[0];
-        const verticalOffset = p1[1];
-
-        return [m, horizontalOffset, verticalOffset];
-    },
-
-    getFunctionForCoeffs: function (coeffs: ReadonlyArray<number>, x: number) {
-        const m = coeffs[0];
-        const horizontalOffset = coeffs[1];
-        const verticalOffset = coeffs[2];
-        return m * Math.abs(x - horizontalOffset) + verticalOffset;
-    },
-
-    getEquationString: function (coords: Coords) {
-        const coeffs: ReadonlyArray<number> = this.getCoefficients(coords);
-        const m = coeffs[0];
-        const horizontalOffset = coeffs[1];
-        const verticalOffset = coeffs[2];
-        return (
-            "y = " +
-            m.toFixed(3) +
-            "| x - " +
-            horizontalOffset.toFixed(3) +
-            "| + " +
-            verticalOffset.toFixed(3)
-        );
-    },
-});
+    SINUSOID: Graphie.Sinusoid,
+};
 
-/* Utility functions for dealing with graphing interfaces. */
-const functionTypeMapping = {
-    linear: Linear,
-    quadratic: Quadratic,
-    sinusoid: Sinusoid,
-    tangent: Tangent,
-    exponential: Exponential,
-    logarithm: Logarithm,
-    absolute_value: AbsoluteValue,
+const DEFAULT_BACKGROUND_IMAGE = {
+    url: null,
 } as const;
 
-export const allTypes: any = _.keys(functionTypeMapping);
-
-type FunctionTypeMappingKeys = keyof typeof functionTypeMapping;
-
-type ConditionalGraderType<T extends FunctionTypeMappingKeys> =
-    // prettier-ignore
-    T extends "linear" ? LinearType
-    : T extends "quadratic" ? QuadraticType
-    : T extends "sinusoid" ? SinusoidType
-    : T extends "tangent" ? TangentType
-    : T extends "exponential" ? ExponentialType
-    : T extends "logarithm" ? LogarithmType
-    : T extends "absolute_value" ? AbsoluteValueType
-    : never;
-
-export function functionForType<T extends FunctionTypeMappingKeys>(
-    type: T,
-): ConditionalGraderType<T> {
-    // @ts-expect-error: TypeScript doesn't know how to use deal with generics
-    // and conditional types in this way.
-    return functionTypeMapping[type];
-}
-
 export const getEquationString = (props: any): string => {
     const plot = props.plot;
     if (plot.type && plot.coords) {
-        const handler = functionForType(plot.type);
+        const handler = GrapherUtil.functionForType(plot.type);
         const result = handler.getEquationString(plot.coords, plot.asymptote);
         return result || "";
     }
@@ -728,7 +102,7 @@ export const defaultPlotProps = (
     // extra information. It would be valid to always submit the default
     // widget before even reading the question; you can't lose, but you
     // might get a free win.
-    const model = functionForType(type);
+    const model = GrapherUtil.functionForType(type);
     const defaultAsymptote =
         "defaultAsymptote" in model ? model.defaultAsymptote : null;
     const gridStep = [1, 1];
@@ -806,7 +180,10 @@ export const typeToButton = (type: FunctionTypeMappingKeys): any => {
         value: type,
         title: capitalized,
         content: (
-            <img src={staticUrl(functionForType(type).url)} alt={capitalized} />
+            <img
+                src={staticUrl(GrapherUtil.functionForType(type).url)}
+                alt={capitalized}
+            />
         ),
     };
 };
diff --git a/packages/perseus/src/widgets/group/group.tsx b/packages/perseus/src/widgets/group/group.tsx
index 152c1d87ec..30e411ab08 100644
--- a/packages/perseus/src/widgets/group/group.tsx
+++ b/packages/perseus/src/widgets/group/group.tsx
@@ -18,9 +18,12 @@ import type {
     WidgetExports,
     WidgetProps,
 } from "../../types";
-import type {PerseusGroupRubric, UserInputArray} from "../../validation.types";
 import type {GroupPromptJSON} from "../../widget-ai-utils/group/group-ai-utils";
 import type {PerseusGroupWidgetOptions} from "@khanacademy/perseus-core";
+import type {
+    PerseusGroupRubric,
+    UserInputArray,
+} from "@khanacademy/perseus-score";
 
 type RenderProps = PerseusGroupWidgetOptions; // exports has no 'transform'
 type Props = WidgetProps<RenderProps, PerseusGroupRubric>;
diff --git a/packages/perseus/src/widgets/group/score-group.ts b/packages/perseus/src/widgets/group/score-group.ts
index 06eb2406fb..afe02b1aa4 100644
--- a/packages/perseus/src/widgets/group/score-group.ts
+++ b/packages/perseus/src/widgets/group/score-group.ts
@@ -2,11 +2,11 @@ import {scoreWidgetsFunctional} from "../../renderer-util";
 import {flattenScores} from "../../util/scoring";
 
 import type {PerseusStrings} from "../../strings";
-import type {PerseusScore} from "../../types";
 import type {
+    PerseusScore,
     PerseusGroupRubric,
     PerseusGroupUserInput,
-} from "../../validation.types";
+} from "@khanacademy/perseus-score";
 
 // The `group` widget is basically a widget hosting a full Perseus system in
 // it. As such, scoring a group means scoring all widgets it contains.
diff --git a/packages/perseus/src/widgets/iframe/iframe.tsx b/packages/perseus/src/widgets/iframe/iframe.tsx
index 67ce0d4f32..3104c2cefe 100644
--- a/packages/perseus/src/widgets/iframe/iframe.tsx
+++ b/packages/perseus/src/widgets/iframe/iframe.tsx
@@ -7,6 +7,12 @@
  *  but could also be used for embedding viz's hosted elsewhere.
  */
 
+import {
+    scoreIframe,
+    type PerseusIFrameRubric,
+    type PerseusIFrameUserInput,
+    type UserInputStatus,
+} from "@khanacademy/perseus-score";
 import $ from "jquery";
 import * as React from "react";
 import _ from "underscore";
@@ -16,14 +22,7 @@ import * as Changeable from "../../mixins/changeable";
 import Util from "../../util";
 import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/iframe/iframe-ai-utils";
 
-import {scoreIframe} from "./score-iframe";
-
 import type {WidgetExports, WidgetProps, Widget} from "../../types";
-import type {
-    PerseusIFrameRubric,
-    PerseusIFrameUserInput,
-    UserInputStatus,
-} from "../../validation.types";
 import type {UnsupportedWidgetPromptJSON} from "../../widget-ai-utils/unsupported-widget";
 import type {PerseusIFrameWidgetOptions} from "@khanacademy/perseus-core";
 
diff --git a/packages/perseus/src/widgets/input-number/input-number.test.ts b/packages/perseus/src/widgets/input-number/input-number.test.ts
index 420b35a71a..5dc4b9500e 100644
--- a/packages/perseus/src/widgets/input-number/input-number.test.ts
+++ b/packages/perseus/src/widgets/input-number/input-number.test.ts
@@ -8,28 +8,17 @@ import _ from "underscore";
 
 import {testDependencies} from "../../../../../testing/test-dependencies";
 import * as Dependencies from "../../dependencies";
-import {mockStrings} from "../../strings";
 import {scorePerseusItemTesting} from "../../util/test-utils";
 import {renderQuestion} from "../__testutils__/renderQuestion";
 
 import InputNumber from "./input-number";
 import {question3 as question} from "./input-number.testdata";
-import scoreInputNumber from "./score-input-number";
 
-import type {
-    PerseusInputNumberWidgetOptions,
-    PerseusRenderer,
-} from "@khanacademy/perseus-core";
+import type {PerseusRenderer} from "@khanacademy/perseus-core";
 import type {UserEvent} from "@testing-library/user-event";
 
 const {transform} = InputNumber;
 
-const options: PerseusInputNumberWidgetOptions = {
-    value: "2^{-2}-3",
-    size: "normal",
-    simplify: "optional",
-};
-
 describe("input-number", function () {
     let userEvent: UserEvent;
     beforeEach(() => {
@@ -263,26 +252,6 @@ describe("input-number", function () {
     });
 });
 
-describe("invalid", function () {
-    beforeEach(() => {
-        jest.spyOn(Dependencies, "getDependencies").mockReturnValue(
-            testDependencies,
-        );
-    });
-
-    it("should handle invalid answers with no error callback", function () {
-        const err = scoreInputNumber(
-            {currentValue: "x+1"},
-            options,
-            mockStrings,
-        );
-        expect(err).toEqual({
-            message: "EXTRA_SYMBOLS_ERROR",
-            type: "invalid",
-        });
-    });
-});
-
 describe("getOneCorrectAnswerFromRubric", () => {
     beforeEach(() => {
         jest.spyOn(Dependencies, "getDependencies").mockReturnValue(
diff --git a/packages/perseus/src/widgets/input-number/input-number.tsx b/packages/perseus/src/widgets/input-number/input-number.tsx
index 213bf825bc..bcb0af99fd 100644
--- a/packages/perseus/src/widgets/input-number/input-number.tsx
+++ b/packages/perseus/src/widgets/input-number/input-number.tsx
@@ -1,4 +1,10 @@
 import {linterContextDefault} from "@khanacademy/perseus-linter";
+import {
+    inputNumberAnswerTypes,
+    scoreInputNumber,
+    type PerseusInputNumberRubric,
+    type PerseusInputNumberUserInput,
+} from "@khanacademy/perseus-score";
 import {spacing} from "@khanacademy/wonder-blocks-tokens";
 import {StyleSheet} from "aphrodite";
 import * as React from "react";
@@ -10,14 +16,8 @@ import SimpleKeypadInput from "../../components/simple-keypad-input";
 import {ApiOptions} from "../../perseus-api";
 import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/input-number/input-number-ai-utils";
 
-import scoreInputNumber, {answerTypes} from "./score-input-number";
-
 import type {PerseusStrings} from "../../strings";
 import type {Path, Widget, WidgetExports, WidgetProps} from "../../types";
-import type {
-    PerseusInputNumberRubric,
-    PerseusInputNumberUserInput,
-} from "../../validation.types";
 import type {InputNumberPromptJSON} from "../../widget-ai-utils/input-number/input-number-ai-utils";
 import type {PerseusInputNumberWidgetOptions} from "@khanacademy/perseus-core";
 
@@ -178,7 +178,7 @@ class InputNumber extends React.Component<Props> implements Widget {
     examples(): ReadonlyArray<string> {
         const {strings} = this.context;
         const type = this.props.answerType;
-        const forms = answerTypes[type].forms.split(/\s*,\s*/);
+        const forms = inputNumberAnswerTypes[type].forms.split(/\s*,\s*/);
 
         const examples = _.map(forms, (form) =>
             formExamples[form](this.props, strings),
diff --git a/packages/perseus/src/widgets/interactive-graph.tsx b/packages/perseus/src/widgets/interactive-graph.tsx
index ee412b3c94..c3b3433ff1 100644
--- a/packages/perseus/src/widgets/interactive-graph.tsx
+++ b/packages/perseus/src/widgets/interactive-graph.tsx
@@ -1,6 +1,20 @@
 /* eslint-disable @babel/no-invalid-this, react/no-unsafe, react/sort-comp */
-import {number as knumber, point as kpoint} from "@khanacademy/kmath";
-import {Errors, PerseusError} from "@khanacademy/perseus-core";
+import {
+    angles,
+    geometry,
+    number as knumber,
+    point as kpoint,
+} from "@khanacademy/kmath";
+import {
+    approximateEqual,
+    Errors,
+    PerseusError,
+} from "@khanacademy/perseus-core";
+import {
+    scoreInteractiveGraph,
+    type PerseusInteractiveGraphRubric,
+    type PerseusInteractiveGraphUserInput,
+} from "@khanacademy/perseus-score";
 import $ from "jquery";
 import debounce from "lodash.debounce";
 import * as React from "react";
@@ -12,43 +26,24 @@ import Interactive2 from "../interactive2";
 import WrappedLine from "../interactive2/wrapped-line";
 import Util from "../util";
 import KhanColors from "../util/colors";
-import {
-    angleMeasures,
-    ccw,
-    collinear,
-    getLineEquation,
-    getLineIntersection,
-    intersects,
-    lawOfCosines,
-    magnitude,
-    rotate,
-    sign,
-    vector,
-} from "../util/geometry";
 import GraphUtils from "../util/graph-utils";
 import {polar} from "../util/graphie";
 import {getInteractiveBoxFromSizeClass} from "../util/sizing-utils";
 import {getPromptJSON} from "../widget-ai-utils/interactive-graph/interactive-graph-ai-utils";
 
 import {StatefulMafsGraph} from "./interactive-graphs";
-import {getClockwiseAngle} from "./interactive-graphs/math";
-import scoreInteractiveGraph from "./interactive-graphs/score-interactive-graph";
 
 import type {StatefulMafsGraphType} from "./interactive-graphs/stateful-mafs-graph";
 import type {QuadraticGraphState} from "./interactive-graphs/types";
 import type {Coord} from "../interactive2/types";
 import type {ChangeHandler, WidgetExports, WidgetProps} from "../types";
+import type {InteractiveGraphPromptJSON} from "../widget-ai-utils/interactive-graph/interactive-graph-ai-utils";
+import type {UnsupportedWidgetPromptJSON} from "../widget-ai-utils/unsupported-widget";
 import type {
     QuadraticCoefficient,
-    Range,
     SineCoefficient,
-} from "../util/geometry";
-import type {
-    PerseusInteractiveGraphRubric,
-    PerseusInteractiveGraphUserInput,
-} from "../validation.types";
-import type {InteractiveGraphPromptJSON} from "../widget-ai-utils/interactive-graph/interactive-graph-ai-utils";
-import type {UnsupportedWidgetPromptJSON} from "../widget-ai-utils/unsupported-widget";
+    Range,
+} from "@khanacademy/kmath";
 import type {
     PerseusGraphType,
     PerseusGraphTypeAngle,
@@ -63,6 +58,22 @@ import type {
 } from "@khanacademy/perseus-core";
 import type {PropsFor} from "@khanacademy/wonder-blocks-core";
 
+const {getClockwiseAngle} = angles;
+
+const {
+    angleMeasures,
+    ccw,
+    collinear,
+    getLineEquation,
+    getLineIntersection,
+    intersects,
+    lawOfCosines,
+    magnitude,
+    rotate,
+    sign,
+    vector,
+} = geometry;
+
 const TRASH_ICON_URI =
     "https://ka-perseus-graphie.s3.amazonaws.com/b1452c0d79fd0f7ff4c3af9488474a0a0decb361.png";
 
@@ -70,8 +81,6 @@ const defaultBackgroundImage = {
     url: null,
 };
 
-const eq = Util.eq;
-
 const UNLIMITED = "unlimited" as const;
 
 // Sample background image:
@@ -84,7 +93,7 @@ function defaultVal<T>(actual: T | null | undefined, defaultValue: T): T {
 
 // Less than or approximately equal
 function leq(a: any, b) {
-    return a < b || eq(a, b);
+    return a < b || approximateEqual(a, b);
 }
 
 function capitalize(str) {
@@ -2291,12 +2300,12 @@ class InteractiveGraph extends React.Component<Props, State> {
 
     static getLinearEquationString(props: Props): string {
         const coords = InteractiveGraph.getLineCoords(props.graph, props);
-        if (eq(coords[0][0], coords[1][0])) {
+        if (approximateEqual(coords[0][0], coords[1][0])) {
             return "x = " + coords[0][0].toFixed(3);
         }
         const m = (coords[1][1] - coords[0][1]) / (coords[1][0] - coords[0][0]);
         const b = coords[0][1] - m * coords[0][0];
-        if (eq(m, 0)) {
+        if (approximateEqual(m, 0)) {
             return "y = " + b.toFixed(3);
         }
         return "y = " + m.toFixed(3) + "x + " + b.toFixed(3);
diff --git a/packages/perseus/src/widgets/interactive-graphs/graphs/angle.tsx b/packages/perseus/src/widgets/interactive-graphs/graphs/angle.tsx
index eda9dce47d..0f3f764b46 100644
--- a/packages/perseus/src/widgets/interactive-graphs/graphs/angle.tsx
+++ b/packages/perseus/src/widgets/interactive-graphs/graphs/angle.tsx
@@ -1,9 +1,10 @@
+import {angles} from "@khanacademy/kmath";
 import {vec} from "mafs";
 import * as React from "react";
 
 import {usePerseusI18n} from "../../../components/i18n-context";
 import a11y from "../../../util/a11y";
-import {X, Y, calculateAngleInDegrees, getClockwiseAngle, polar} from "../math";
+import {X, Y} from "../math";
 import {findIntersectionOfRays} from "../math/geometry";
 import {actions} from "../reducer/interactive-graph-action";
 import useGraphConfig from "../reducer/use-graph-config";
@@ -26,6 +27,8 @@ import type {
 } from "../types";
 import type {CollinearTuple} from "@khanacademy/perseus-core";
 
+const {calculateAngleInDegrees, getClockwiseAngle, polar} = angles;
+
 type AngleGraphProps = MafsGraphProps<AngleGraphState>;
 
 export function renderAngleGraph(
diff --git a/packages/perseus/src/widgets/interactive-graphs/graphs/components/angle-indicators.test.ts b/packages/perseus/src/widgets/interactive-graphs/graphs/components/angle-indicators.test.ts
index e64854cf5e..dc730e1444 100644
--- a/packages/perseus/src/widgets/interactive-graphs/graphs/components/angle-indicators.test.ts
+++ b/packages/perseus/src/widgets/interactive-graphs/graphs/components/angle-indicators.test.ts
@@ -1,4 +1,4 @@
-import {getClockwiseAngle} from "../../math";
+import {angles} from "@khanacademy/kmath";
 
 import {shouldDrawArcOutside} from "./angle-indicators";
 
@@ -6,6 +6,8 @@ import type {Coord} from "@khanacademy/perseus";
 import type {CollinearTuple} from "@khanacademy/perseus-core";
 import type {vec, Interval} from "mafs";
 
+const {getClockwiseAngle} = angles;
+
 describe("shouldDrawArcOutside", () => {
     const range = [
         [-1, 6],
diff --git a/packages/perseus/src/widgets/interactive-graphs/graphs/components/angle-indicators.tsx b/packages/perseus/src/widgets/interactive-graphs/graphs/components/angle-indicators.tsx
index 1d958c4917..6df6d4f865 100644
--- a/packages/perseus/src/widgets/interactive-graphs/graphs/components/angle-indicators.tsx
+++ b/packages/perseus/src/widgets/interactive-graphs/graphs/components/angle-indicators.tsx
@@ -1,9 +1,9 @@
+import {angles, geometry} from "@khanacademy/kmath";
 import {color} from "@khanacademy/wonder-blocks-tokens";
 import {vec} from "mafs";
 import * as React from "react";
 
-import {clockwise} from "../../../../util/geometry";
-import {getAngleFromVertex, segmentsIntersect} from "../../math";
+import {segmentsIntersect} from "../../math";
 import {getIntersectionOfRayWithBox as getRangeIntersectionVertex} from "../utils";
 
 import {MafsCssTransformWrapper} from "./css-transform-wrapper";
@@ -12,6 +12,9 @@ import {TextLabel} from "./text-label";
 import type {CollinearTuple} from "@khanacademy/perseus-core";
 import type {Interval} from "mafs";
 
+const {clockwise} = geometry;
+const {getAngleFromVertex} = angles;
+
 interface PolygonAngleProps {
     centerPoint: vec.Vector2;
     endPoints: [vec.Vector2, vec.Vector2];
diff --git a/packages/perseus/src/widgets/interactive-graphs/graphs/components/vector.tsx b/packages/perseus/src/widgets/interactive-graphs/graphs/components/vector.tsx
index 637b5651fc..7c223434fe 100644
--- a/packages/perseus/src/widgets/interactive-graphs/graphs/components/vector.tsx
+++ b/packages/perseus/src/widgets/interactive-graphs/graphs/components/vector.tsx
@@ -1,12 +1,14 @@
+import {angles} from "@khanacademy/kmath";
 import {vec} from "mafs";
 import * as React from "react";
 
-import {calculateAngleInDegrees} from "../../math";
 import {useTransformVectorsToPixels} from "../use-transform";
 
 import {Arrowhead} from "./arrowhead";
 import {SVGLine} from "./svg-line";
 
+const {calculateAngleInDegrees} = angles;
+
 type Props = {
     tail: vec.Vector2;
     tip: vec.Vector2;
diff --git a/packages/perseus/src/widgets/interactive-graphs/graphs/quadratic.tsx b/packages/perseus/src/widgets/interactive-graphs/graphs/quadratic.tsx
index c06966d992..e29aeee8e3 100644
--- a/packages/perseus/src/widgets/interactive-graphs/graphs/quadratic.tsx
+++ b/packages/perseus/src/widgets/interactive-graphs/graphs/quadratic.tsx
@@ -12,6 +12,7 @@ import type {
     Dispatch,
     InteractiveGraphElementSuite,
 } from "../types";
+import type {QuadraticCoefficient, QuadraticCoords} from "@khanacademy/kmath";
 
 export function renderQuadraticGraph(
     state: QuadraticGraphState,
@@ -24,8 +25,6 @@ export function renderQuadraticGraph(
 }
 
 type QuadraticGraphProps = MafsGraphProps<QuadraticGraphState>;
-type QuadraticCoefficient = [number, number, number];
-export type QuadraticCoords = QuadraticGraphState["coords"];
 
 function QuadraticGraph(props: QuadraticGraphProps) {
     const {dispatch, graphState} = props;
diff --git a/packages/perseus/src/widgets/interactive-graphs/graphs/sinusoid.tsx b/packages/perseus/src/widgets/interactive-graphs/graphs/sinusoid.tsx
index d8ec98d7ef..974eda7b24 100644
--- a/packages/perseus/src/widgets/interactive-graphs/graphs/sinusoid.tsx
+++ b/packages/perseus/src/widgets/interactive-graphs/graphs/sinusoid.tsx
@@ -2,18 +2,19 @@ import {color} from "@khanacademy/wonder-blocks-tokens";
 import {Plot} from "mafs";
 import * as React from "react";
 
-import {X, Y} from "../math";
+import {X, Y} from "../math/coordinates";
 import {actions} from "../reducer/interactive-graph-action";
 
 import {MovablePoint} from "./components/movable-point";
 
-import type {Coord} from "../../../interactive2/types";
 import type {
     SinusoidGraphState,
     MafsGraphProps,
     Dispatch,
     InteractiveGraphElementSuite,
 } from "../types";
+import type {NamedSineCoefficient} from "@khanacademy/kmath";
+import type {Coord} from "@khanacademy/perseus-core";
 
 export function renderSinusoidGraph(
     state: SinusoidGraphState,
@@ -27,13 +28,6 @@ export function renderSinusoidGraph(
 
 type SinusoidGraphProps = MafsGraphProps<SinusoidGraphState>;
 
-export type SineCoefficient = {
-    amplitude: number;
-    angularFrequency: number;
-    phase: number;
-    verticalOffset: number;
-};
-
 function SinusoidGraph(props: SinusoidGraphProps) {
     const {dispatch, graphState} = props;
 
@@ -46,7 +40,7 @@ function SinusoidGraph(props: SinusoidGraphProps) {
     // to content creators the currently selected "correct answer" in the Content Editor.
     // While we should technically never have invalid coordinates, we want to ensure that
     // we have a fallback so that the graph can still be plotted without crashing.
-    const coeffRef = React.useRef<SineCoefficient>({
+    const coeffRef = React.useRef<NamedSineCoefficient>({
         amplitude: 1,
         angularFrequency: 1,
         phase: 1,
@@ -82,7 +76,7 @@ function SinusoidGraph(props: SinusoidGraphProps) {
 // Plot a sinusoid of the form: f(x) = a * sin(b * x - c) + d
 export const computeSine = function (
     x: number, // x-coordinate
-    sinusoidCoefficients: SineCoefficient,
+    sinusoidCoefficients: NamedSineCoefficient,
 ) {
     // Break down the coefficients for the sine function to improve readability
     const {
@@ -97,7 +91,7 @@ export const computeSine = function (
 
 export const getSinusoidCoefficients = (
     coords: ReadonlyArray<Coord>,
-): SineCoefficient | undefined => {
+): NamedSineCoefficient | undefined => {
     // It's assumed that p1 is the root and p2 is the first peak
     const p1 = coords[0];
     const p2 = coords[1];
diff --git a/packages/perseus/src/widgets/interactive-graphs/locked-figures/locked-line.tsx b/packages/perseus/src/widgets/interactive-graphs/locked-figures/locked-line.tsx
index 36fcf12e48..65c5e2be3f 100644
--- a/packages/perseus/src/widgets/interactive-graphs/locked-figures/locked-line.tsx
+++ b/packages/perseus/src/widgets/interactive-graphs/locked-figures/locked-line.tsx
@@ -1,3 +1,4 @@
+import {angles} from "@khanacademy/kmath";
 import {lockedFigureColors} from "@khanacademy/perseus-core";
 import {color as wbColor, spacing} from "@khanacademy/wonder-blocks-tokens";
 import {Point, Line, vec} from "mafs";
@@ -7,11 +8,13 @@ import {Arrowhead} from "../graphs/components/arrowhead";
 import {Vector} from "../graphs/components/vector";
 import {useTransformVectorsToPixels} from "../graphs/use-transform";
 import {getIntersectionOfRayWithBox} from "../graphs/utils";
-import {X, Y, calculateAngleInDegrees} from "../math";
+import {X, Y} from "../math";
 
 import type {LockedLineType} from "@khanacademy/perseus-core";
 import type {Interval} from "mafs";
 
+const {calculateAngleInDegrees} = angles;
+
 type Props = LockedLineType & {
     range: [Interval, Interval];
 };
diff --git a/packages/perseus/src/widgets/interactive-graphs/math/index.ts b/packages/perseus/src/widgets/interactive-graphs/math/index.ts
index 86f02fcb3e..eb478ac6d9 100644
--- a/packages/perseus/src/widgets/interactive-graphs/math/index.ts
+++ b/packages/perseus/src/widgets/interactive-graphs/math/index.ts
@@ -5,10 +5,3 @@ export {X, Y} from "./coordinates";
 export {MIN, MAX, size} from "./interval";
 export {lerp} from "./interpolation";
 export {segmentsIntersect} from "./geometry";
-export {
-    calculateAngleInDegrees,
-    convertDegreesToRadians,
-    getClockwiseAngle,
-    getAngleFromVertex,
-    polar,
-} from "./angles";
diff --git a/packages/perseus/src/widgets/interactive-graphs/protractor.tsx b/packages/perseus/src/widgets/interactive-graphs/protractor.tsx
index 6931c4a75f..ff9070468c 100644
--- a/packages/perseus/src/widgets/interactive-graphs/protractor.tsx
+++ b/packages/perseus/src/widgets/interactive-graphs/protractor.tsx
@@ -1,3 +1,4 @@
+import {angles} from "@khanacademy/kmath";
 import {useDrag} from "@use-gesture/react";
 import {vec} from "mafs";
 import * as React from "react";
@@ -7,13 +8,7 @@ import {pathBuilder} from "../../util/svg";
 
 import {useDraggable} from "./graphs/use-draggable";
 import {useTransformVectorsToPixels} from "./graphs/use-transform";
-import {
-    calculateAngleInDegrees,
-    convertDegreesToRadians,
-    lerp,
-    X,
-    Y,
-} from "./math";
+import {lerp, X, Y} from "./math";
 import useGraphConfig from "./reducer/use-graph-config";
 import {bound, TARGET_SIZE} from "./utils";
 
@@ -21,6 +16,8 @@ import type {RefObject} from "react";
 
 import "./protractor.css";
 
+const {calculateAngleInDegrees, convertDegreesToRadians} = angles;
+
 const protractorImage =
     "https://ka-perseus-graphie.s3.amazonaws.com/e9d032f2ab8b95979f674fbfa67056442ba1ff6a.png";
 
diff --git a/packages/perseus/src/widgets/interactive-graphs/reducer/initialize-graph-state.ts b/packages/perseus/src/widgets/interactive-graphs/reducer/initialize-graph-state.ts
index 6b95a560e0..63735b2926 100644
--- a/packages/perseus/src/widgets/interactive-graphs/reducer/initialize-graph-state.ts
+++ b/packages/perseus/src/widgets/interactive-graphs/reducer/initialize-graph-state.ts
@@ -1,7 +1,7 @@
+import {geometry} from "@khanacademy/kmath";
 import {UnreachableCaseError} from "@khanacademy/wonder-stuff-core";
 import {vec} from "mafs";
 
-import {magnitude, vector} from "../../../util/geometry";
 import {normalizeCoords, normalizePoints} from "../utils";
 
 import type {Coord} from "../../../interactive2/types";
@@ -21,6 +21,8 @@ import type {
 } from "@khanacademy/perseus-core";
 import type {Interval} from "mafs";
 
+const {magnitude, vector} = geometry;
+
 export type InitializeGraphStateParams = {
     range: [x: Interval, y: Interval];
     step: [x: number, y: number];
diff --git a/packages/perseus/src/widgets/interactive-graphs/reducer/interactive-graph-reducer.test.ts b/packages/perseus/src/widgets/interactive-graphs/reducer/interactive-graph-reducer.test.ts
index fc0ed20ee8..14044e27a5 100644
--- a/packages/perseus/src/widgets/interactive-graphs/reducer/interactive-graph-reducer.test.ts
+++ b/packages/perseus/src/widgets/interactive-graphs/reducer/interactive-graph-reducer.test.ts
@@ -1,7 +1,6 @@
+import {angles} from "@khanacademy/kmath";
 import invariant from "tiny-invariant";
 
-import {getClockwiseAngle} from "../math/angles";
-
 import {changeSnapStep, changeRange, actions} from "./interactive-graph-action";
 import {interactiveGraphReducer} from "./interactive-graph-reducer";
 
@@ -13,6 +12,8 @@ import type {
 } from "../types";
 import type {GraphRange} from "@khanacademy/perseus-core";
 
+const {getClockwiseAngle} = angles;
+
 const baseSegmentGraphState: InteractiveGraphState = {
     hasBeenInteractedWith: false,
     type: "segment",
diff --git a/packages/perseus/src/widgets/interactive-graphs/reducer/interactive-graph-reducer.ts b/packages/perseus/src/widgets/interactive-graphs/reducer/interactive-graph-reducer.ts
index 5b5e6974c7..33d1611bca 100644
--- a/packages/perseus/src/widgets/interactive-graphs/reducer/interactive-graph-reducer.ts
+++ b/packages/perseus/src/widgets/interactive-graphs/reducer/interactive-graph-reducer.ts
@@ -1,32 +1,16 @@
-import {vector as kvector} from "@khanacademy/kmath";
+import {
+    angles,
+    coefficients,
+    geometry,
+    vector as kvector,
+} from "@khanacademy/kmath";
+import {approximateEqual} from "@khanacademy/perseus-core";
 import {UnreachableCaseError} from "@khanacademy/wonder-stuff-core";
 import {vec} from "mafs";
 import _ from "underscore";
 
-import Util from "../../../util";
-import {
-    angleMeasures,
-    ccw,
-    lawOfCosines,
-    magnitude,
-    polygonSidesIntersect,
-    reverseVector,
-    sign,
-    vector,
-} from "../../../util/geometry";
-import {getQuadraticCoefficients} from "../graphs/quadratic";
 import {getArrayWithoutDuplicates} from "../graphs/utils";
-import {
-    clamp,
-    clampToBox,
-    getAngleFromVertex,
-    getClockwiseAngle,
-    inset,
-    polar,
-    snap,
-    X,
-    Y,
-} from "../math";
+import {clamp, clampToBox, inset, snap, X, Y} from "../math";
 import {bound, isUnlimitedGraphState} from "../utils";
 
 import {initializeGraphState} from "./initialize-graph-state";
@@ -71,14 +55,27 @@ import {
 } from "./interactive-graph-action";
 
 import type {Coord} from "../../../interactive2/types";
-import type {QuadraticCoords} from "../graphs/quadratic";
 import type {
     AngleGraphState,
     InteractiveGraphState,
     PairOfPoints,
 } from "../types";
+import type {QuadraticCoords} from "@khanacademy/kmath";
 import type {Interval} from "mafs";
 
+const {getAngleFromVertex, getClockwiseAngle, polar} = angles;
+const {
+    angleMeasures,
+    ccw,
+    lawOfCosines,
+    magnitude,
+    polygonSidesIntersect,
+    reverseVector,
+    sign,
+    vector,
+} = geometry;
+const {getQuadraticCoefficients} = coefficients;
+
 const minDistanceBetweenAngleVertexAndSidePoint = 2;
 
 export function interactiveGraphReducer(
@@ -777,11 +774,9 @@ interface ConstraintArgs {
     point: vec.Vector2;
 }
 
-const eq = Util.eq;
-
 // Less than or approximately equal
 function leq(a: any, b) {
-    return a < b || eq(a, b);
+    return a < b || approximateEqual(a, b);
 }
 
 function boundAndSnapToGrid(
diff --git a/packages/perseus/src/widgets/interactive-graphs/reducer/interactive-graph-state.ts b/packages/perseus/src/widgets/interactive-graphs/reducer/interactive-graph-state.ts
index 6e28b1aed4..28cb7ac64f 100644
--- a/packages/perseus/src/widgets/interactive-graphs/reducer/interactive-graph-state.ts
+++ b/packages/perseus/src/widgets/interactive-graphs/reducer/interactive-graph-state.ts
@@ -1,9 +1,11 @@
-import {clockwise} from "../../../util/geometry";
+import {geometry} from "@khanacademy/kmath";
 
 import type {Coord} from "../../../interactive2/types";
 import type {CircleGraphState, InteractiveGraphState} from "../types";
 import type {PerseusGraphType} from "@khanacademy/perseus-core";
 
+const {clockwise} = geometry;
+
 export function getGradableGraph(
     state: InteractiveGraphState,
     initialGraph: PerseusGraphType,
diff --git a/packages/perseus/src/widgets/interactive-graphs/stateful-mafs-graph.tsx b/packages/perseus/src/widgets/interactive-graphs/stateful-mafs-graph.tsx
index 618655ab57..55b7bd0aeb 100644
--- a/packages/perseus/src/widgets/interactive-graphs/stateful-mafs-graph.tsx
+++ b/packages/perseus/src/widgets/interactive-graphs/stateful-mafs-graph.tsx
@@ -15,8 +15,8 @@ import {getGradableGraph} from "./reducer/interactive-graph-state";
 
 import type {InteractiveGraphProps, InteractiveGraphState} from "./types";
 import type {APIOptions} from "../../types";
-import type {PerseusInteractiveGraphUserInput} from "../../validation.types";
 import type {PerseusGraphType} from "@khanacademy/perseus-core";
+import type {PerseusInteractiveGraphUserInput} from "@khanacademy/perseus-score";
 
 export type StatefulMafsGraphProps = {
     flags?: APIOptions["flags"];
diff --git a/packages/perseus/src/widgets/interactive-graphs/types.ts b/packages/perseus/src/widgets/interactive-graphs/types.ts
index 488d5c3b7a..7055d5a1d0 100644
--- a/packages/perseus/src/widgets/interactive-graphs/types.ts
+++ b/packages/perseus/src/widgets/interactive-graphs/types.ts
@@ -1,6 +1,7 @@
 import type {InteractiveGraphAction} from "./reducer/interactive-graph-action";
 import type {Coord} from "../../interactive2/types";
 import type {WidgetProps} from "../../types";
+import type {QuadraticCoords} from "@khanacademy/kmath";
 import type {PerseusInteractiveGraphWidgetOptions} from "@khanacademy/perseus-core";
 import type {Interval, vec} from "mafs";
 import type {ReactNode} from "react";
@@ -106,7 +107,7 @@ export interface CircleGraphState extends InteractiveGraphStateCommon {
 
 export interface QuadraticGraphState extends InteractiveGraphStateCommon {
     type: "quadratic";
-    coords: [Coord, Coord, Coord];
+    coords: QuadraticCoords;
 }
 
 export interface SinusoidGraphState extends InteractiveGraphStateCommon {
diff --git a/packages/perseus/src/widgets/label-image/label-image.tsx b/packages/perseus/src/widgets/label-image/label-image.tsx
index 30da1387cb..527a08c317 100644
--- a/packages/perseus/src/widgets/label-image/label-image.tsx
+++ b/packages/perseus/src/widgets/label-image/label-image.tsx
@@ -6,6 +6,12 @@
  * knowledge by directly interacting with the image.
  */
 
+import {
+    scoreLabelImageMarker,
+    scoreLabelImage,
+    type PerseusLabelImageRubric,
+    type PerseusLabelImageUserInput,
+} from "@khanacademy/perseus-score";
 import Clickable from "@khanacademy/wonder-blocks-clickable";
 import {View} from "@khanacademy/wonder-blocks-core";
 import {StyleSheet, css} from "aphrodite";
@@ -25,18 +31,15 @@ import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/label-image
 import AnswerChoices from "./answer-choices";
 import {HideAnswersToggle} from "./hide-answers-toggle";
 import Marker from "./marker";
-import scoreLabelImage, {scoreMarker} from "./score-label-image";
 
-import type {InteractiveMarkerType} from "./types";
 import type {DependencyProps} from "../../dependencies";
 import type {ChangeableProps} from "../../mixins/changeable";
 import type {APIOptions, Widget, WidgetExports} from "../../types";
-import type {
-    PerseusLabelImageRubric,
-    PerseusLabelImageUserInput,
-} from "../../validation.types";
 import type {LabelImagePromptJSON} from "../../widget-ai-utils/label-image/label-image-ai-utils";
-import type {PerseusLabelImageWidgetOptions} from "@khanacademy/perseus-core";
+import type {
+    InteractiveMarkerType,
+    PerseusLabelImageWidgetOptions,
+} from "@khanacademy/perseus-core";
 import type {PropsFor} from "@khanacademy/wonder-blocks-core";
 import type {CSSProperties} from "aphrodite";
 
@@ -324,7 +327,7 @@ export class LabelImage
         const {onChange} = this.props;
 
         const updatedMarkers = markers.map((marker) => {
-            const score = scoreMarker(marker);
+            const score = scoreLabelImageMarker(marker);
 
             return {
                 ...marker,
@@ -476,7 +479,7 @@ export class LabelImage
                 }[markerPosition];
             }
 
-            const score = scoreMarker(marker);
+            const score = scoreLabelImageMarker(marker);
             // Once the question is answered, show markers
             // with correct answers, otherwise passthrough
             // the correctness state.
diff --git a/packages/perseus/src/widgets/label-image/marker.tsx b/packages/perseus/src/widgets/label-image/marker.tsx
index 79d4089e9f..2a3153ea05 100644
--- a/packages/perseus/src/widgets/label-image/marker.tsx
+++ b/packages/perseus/src/widgets/label-image/marker.tsx
@@ -16,9 +16,11 @@ import {iconCheck, iconChevronDown, iconMinus} from "../../icon-paths";
 
 import {AnswerPill} from "./answer-pill";
 
-import type {InteractiveMarkerType} from "./types";
 import type {IconType} from "../../components/icon";
-import type {AnalyticsEventHandlerFn} from "@khanacademy/perseus-core";
+import type {
+    AnalyticsEventHandlerFn,
+    InteractiveMarkerType,
+} from "@khanacademy/perseus-core";
 import type {CSSProperties} from "aphrodite";
 
 type Props = InteractiveMarkerType & {
diff --git a/packages/perseus/src/widgets/label-image/types.ts b/packages/perseus/src/widgets/label-image/types.ts
deleted file mode 100644
index 8cf537615e..0000000000
--- a/packages/perseus/src/widgets/label-image/types.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-// Base marker, with the props that are set by the editor.
-export type MarkerType = {
-    // The list of correct answers expected for the marker.
-    answers: ReadonlyArray<string>;
-    // The marker title or description.
-    label: string;
-    // The marker coordinates on the question image as percent of image size.
-    x: number;
-    y: number;
-};
-
-// Additional props that are set when user interacts with the marker.
-export type InteractiveMarkerType = MarkerType & {
-    // The user selected list of answers, used to grade the question.
-    selected?: ReadonlyArray<string>;
-    // Reveal the correctness state of the user selected answers for the marker.
-    showCorrectness?: "correct" | "incorrect";
-    focused?: boolean;
-};
diff --git a/packages/perseus/src/widgets/matcher/matcher.tsx b/packages/perseus/src/widgets/matcher/matcher.tsx
index 15f56e8e09..740ca9c7ff 100644
--- a/packages/perseus/src/widgets/matcher/matcher.tsx
+++ b/packages/perseus/src/widgets/matcher/matcher.tsx
@@ -1,4 +1,9 @@
 import {linterContextDefault} from "@khanacademy/perseus-linter";
+import {
+    scoreMatcher,
+    type PerseusMatcherRubric,
+    type PerseusMatcherUserInput,
+} from "@khanacademy/perseus-score";
 import {CircularSpinner} from "@khanacademy/wonder-blocks-progress-spinner";
 import {StyleSheet, css} from "aphrodite";
 import * as React from "react";
@@ -11,14 +16,8 @@ import Renderer from "../../renderer";
 import Util from "../../util";
 import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/matcher/matcher-ai-utils";
 
-import scoreMatcher from "./score-matcher";
-
 import type {SortableOption} from "../../components/sortable";
 import type {WidgetExports, WidgetProps, Widget} from "../../types";
-import type {
-    PerseusMatcherRubric,
-    PerseusMatcherUserInput,
-} from "../../validation.types";
 import type {MatcherPromptJSON} from "../../widget-ai-utils/matcher/matcher-ai-utils";
 import type {PerseusMatcherWidgetOptions} from "@khanacademy/perseus-core";
 
diff --git a/packages/perseus/src/widgets/matrix/matrix.tsx b/packages/perseus/src/widgets/matrix/matrix.tsx
index da8674812c..6a55a0ee88 100644
--- a/packages/perseus/src/widgets/matrix/matrix.tsx
+++ b/packages/perseus/src/widgets/matrix/matrix.tsx
@@ -1,4 +1,14 @@
+import {
+    getMatrixSize,
+    type PerseusMatrixWidgetAnswers,
+    type PerseusMatrixWidgetOptions,
+} from "@khanacademy/perseus-core";
 import {linterContextDefault} from "@khanacademy/perseus-linter";
+import {
+    scoreMatrix,
+    type PerseusMatrixRubric,
+    type PerseusMatrixUserInput,
+} from "@khanacademy/perseus-score";
 import {StyleSheet} from "aphrodite";
 import classNames from "classnames";
 import * as React from "react";
@@ -15,18 +25,8 @@ import Renderer from "../../renderer";
 import Util from "../../util";
 import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/matrix/matrix-ai-utils";
 
-import scoreMatrix from "./score-matrix";
-
 import type {WidgetExports, WidgetProps, Widget, FocusPath} from "../../types";
-import type {
-    PerseusMatrixRubric,
-    PerseusMatrixUserInput,
-} from "../../validation.types";
 import type {MatrixPromptJSON} from "../../widget-ai-utils/matrix/matrix-ai-utils";
-import type {
-    PerseusMatrixWidgetAnswers,
-    PerseusMatrixWidgetOptions,
-} from "@khanacademy/perseus-core";
 import type {PropsFor} from "@khanacademy/wonder-blocks-core";
 
 const {assert} = InteractiveUtil;
@@ -79,30 +79,6 @@ const getRefForPath = function (path: FocusPath) {
     return "answer" + row + "," + column;
 };
 
-export function getMatrixSize(matrix: ReadonlyArray<ReadonlyArray<number>>) {
-    const matrixSize = [1, 1];
-
-    // We need to find the widest row and tallest column to get the correct
-    // matrix size.
-    _(matrix).each((matrixRow, row) => {
-        let rowWidth = 0;
-        _(matrixRow).each((matrixCol, col) => {
-            if (matrixCol != null && matrixCol.toString().length) {
-                rowWidth = col + 1;
-            }
-        });
-
-        // Matrix width:
-        matrixSize[1] = Math.max(matrixSize[1], rowWidth);
-
-        // Matrix height:
-        if (rowWidth > 0) {
-            matrixSize[0] = Math.max(matrixSize[0], row + 1);
-        }
-    });
-    return matrixSize;
-}
-
 type ExternalProps = WidgetProps<
     {
         // Translatable Text; Shown before the matrix
diff --git a/packages/perseus/src/widgets/mock-widgets/mock-widget.tsx b/packages/perseus/src/widgets/mock-widgets/mock-widget.tsx
index bacd097553..ca2606ceed 100644
--- a/packages/perseus/src/widgets/mock-widgets/mock-widget.tsx
+++ b/packages/perseus/src/widgets/mock-widgets/mock-widget.tsx
@@ -8,12 +8,12 @@ import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/mock-widget
 import scoreMockWidget from "./score-mock-widget";
 
 import type {WidgetExports, WidgetProps, Widget, FocusPath} from "../../types";
+import type {MockWidgetPromptJSON} from "../../widget-ai-utils/mock-widget/prompt-utils";
+import type {MockWidgetOptions} from "@khanacademy/perseus-core";
 import type {
     PerseusMockWidgetRubric,
     PerseusMockWidgetUserInput,
-} from "../../validation.types";
-import type {MockWidgetPromptJSON} from "../../widget-ai-utils/mock-widget/prompt-utils";
-import type {MockWidgetOptions} from "@khanacademy/perseus-core";
+} from "@khanacademy/perseus-score";
 
 type ExternalProps = WidgetProps<MockWidgetOptions, PerseusMockWidgetRubric>;
 
diff --git a/packages/perseus/src/widgets/mock-widgets/score-mock-widget.ts b/packages/perseus/src/widgets/mock-widgets/score-mock-widget.ts
index e9157af772..defb522db6 100644
--- a/packages/perseus/src/widgets/mock-widgets/score-mock-widget.ts
+++ b/packages/perseus/src/widgets/mock-widgets/score-mock-widget.ts
@@ -4,8 +4,8 @@ import type {PerseusStrings} from "../../strings";
 import type {
     PerseusMockWidgetUserInput,
     PerseusMockWidgetRubric,
-} from "../../validation.types";
-import type {PerseusScore} from "@khanacademy/perseus";
+    PerseusScore,
+} from "@khanacademy/perseus-score";
 
 function scoreMockWidget(
     userInput: PerseusMockWidgetUserInput,
diff --git a/packages/perseus/src/widgets/number-line/number-line.tsx b/packages/perseus/src/widgets/number-line/number-line.tsx
index 0ef97c3efa..bb7ef6807d 100644
--- a/packages/perseus/src/widgets/number-line/number-line.tsx
+++ b/packages/perseus/src/widgets/number-line/number-line.tsx
@@ -1,4 +1,8 @@
 import {number as knumber, KhanMath} from "@khanacademy/kmath";
+import {
+    scoreNumberLine,
+    type PerseusNumberLineUserInput,
+} from "@khanacademy/perseus-score";
 import * as React from "react";
 import ReactDOM from "react-dom";
 import _ from "underscore";
@@ -13,12 +17,10 @@ import {ApiOptions} from "../../perseus-api";
 import KhanColors from "../../util/colors";
 import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/number-line/number-line-ai-utils";
 
-import scoreNumberLine from "./score-number-line";
-
 import type {ChangeableProps} from "../../mixins/changeable";
 import type {APIOptions, WidgetExports, FocusPath, Widget} from "../../types";
-import type {PerseusNumberLineUserInput} from "../../validation.types";
 import type {NumberLinePromptJSON} from "../../widget-ai-utils/number-line/number-line-ai-utils";
+import type {Relationship} from "@khanacademy/perseus-core";
 
 // @ts-expect-error - TS2339 - Property 'MovablePoint' does not exist on type 'typeof Graphie'.
 const MovablePoint = Graphie.MovablePoint;
@@ -188,8 +190,6 @@ const TickMarks: any = Graphie.createSimpleClass((graphie, props) => {
     return results;
 });
 
-export type Relationship = "lt" | "gt" | "le" | "ge";
-
 // TODO: most widgets use some like Widget<Something, PerseusNumberLineWidgetOptions>
 // should this one?
 type Props = ChangeableProps & {
diff --git a/packages/perseus/src/widgets/numeric-input/numeric-input.test.ts b/packages/perseus/src/widgets/numeric-input/numeric-input.test.ts
index d177fdb34e..2174f313cd 100644
--- a/packages/perseus/src/widgets/numeric-input/numeric-input.test.ts
+++ b/packages/perseus/src/widgets/numeric-input/numeric-input.test.ts
@@ -17,7 +17,7 @@ import {
     withCoefficient,
 } from "./numeric-input.testdata";
 
-import type {PerseusNumericInputRubric} from "../../validation.types";
+import type {PerseusNumericInputRubric} from "@khanacademy/perseus-score";
 import type {UserEvent} from "@testing-library/user-event";
 
 describe("numeric-input widget", () => {
diff --git a/packages/perseus/src/widgets/numeric-input/numeric-input.tsx b/packages/perseus/src/widgets/numeric-input/numeric-input.tsx
index 24af99bea4..c30d110efa 100644
--- a/packages/perseus/src/widgets/numeric-input/numeric-input.tsx
+++ b/packages/perseus/src/widgets/numeric-input/numeric-input.tsx
@@ -1,5 +1,10 @@
 import {KhanMath} from "@khanacademy/kmath";
 import {linterContextDefault} from "@khanacademy/perseus-linter";
+import {
+    scoreNumericInput,
+    type PerseusNumericInputRubric,
+    type PerseusNumericInputUserInput,
+} from "@khanacademy/perseus-score";
 import {StyleSheet} from "aphrodite";
 import * as React from "react";
 import _ from "underscore";
@@ -10,14 +15,8 @@ import SimpleKeypadInput from "../../components/simple-keypad-input";
 import {ApiOptions} from "../../perseus-api";
 import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/numeric-input/prompt-utils";
 
-import scoreNumericInput from "./score-numeric-input";
-
 import type {PerseusStrings} from "../../strings";
 import type {FocusPath, Widget, WidgetExports, WidgetProps} from "../../types";
-import type {
-    PerseusNumericInputRubric,
-    PerseusNumericInputUserInput,
-} from "../../validation.types";
 import type {NumericInputPromptJSON} from "../../widget-ai-utils/numeric-input/prompt-utils";
 import type {
     PerseusNumericInputWidgetOptions,
diff --git a/packages/perseus/src/widgets/orderer/orderer.tsx b/packages/perseus/src/widgets/orderer/orderer.tsx
index 2936da8a0e..faa41334e6 100644
--- a/packages/perseus/src/widgets/orderer/orderer.tsx
+++ b/packages/perseus/src/widgets/orderer/orderer.tsx
@@ -2,6 +2,11 @@
 /* eslint-disable @babel/no-invalid-this, react/no-unsafe */
 import {Errors} from "@khanacademy/perseus-core";
 import {linterContextDefault} from "@khanacademy/perseus-linter";
+import {
+    scoreOrderer,
+    type PerseusOrdererRubric,
+    type PerseusOrdererUserInput,
+} from "@khanacademy/perseus-score";
 import $ from "jquery";
 import * as React from "react";
 import ReactDOM from "react-dom";
@@ -14,13 +19,7 @@ import Renderer from "../../renderer";
 import Util from "../../util";
 import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/orderer/orderer-ai-utils";
 
-import {scoreOrderer} from "./score-orderer";
-
 import type {WidgetExports, WidgetProps, Widget} from "../../types";
-import type {
-    PerseusOrdererRubric,
-    PerseusOrdererUserInput,
-} from "../../validation.types";
 import type {OrdererPromptJSON} from "../../widget-ai-utils/orderer/orderer-ai-utils";
 import type {PerseusOrdererWidgetOptions} from "@khanacademy/perseus-core";
 import type {LinterContextProps} from "@khanacademy/perseus-linter";
diff --git a/packages/perseus/src/widgets/plotter/plotter.tsx b/packages/perseus/src/widgets/plotter/plotter.tsx
index 95c724316e..3eb871496b 100644
--- a/packages/perseus/src/widgets/plotter/plotter.tsx
+++ b/packages/perseus/src/widgets/plotter/plotter.tsx
@@ -1,5 +1,10 @@
 /* eslint-disable react/no-unsafe */
 import {KhanMath} from "@khanacademy/kmath";
+import {
+    scorePlotter,
+    type PerseusPlotterScoringData,
+    type PerseusPlotterUserInput,
+} from "@khanacademy/perseus-score";
 import $ from "jquery";
 import * as React from "react";
 import ReactDOM from "react-dom";
@@ -13,13 +18,7 @@ import KhanColors from "../../util/colors";
 import GraphUtils from "../../util/graph-utils";
 import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/plotter/plotter-ai-utils";
 
-import scorePlotter from "./score-plotter";
-
 import type {Widget, WidgetExports, WidgetProps} from "../../types";
-import type {
-    PerseusPlotterScoringData,
-    PerseusPlotterUserInput,
-} from "../../validation.types";
 import type {UnsupportedWidgetPromptJSON} from "../../widget-ai-utils/unsupported-widget";
 import type {PerseusPlotterWidgetOptions} from "@khanacademy/perseus-core";
 
diff --git a/packages/perseus/src/widgets/radio/__tests__/radio.test.ts b/packages/perseus/src/widgets/radio/__tests__/radio.test.ts
index a9dfc66b2d..a3410225b9 100644
--- a/packages/perseus/src/widgets/radio/__tests__/radio.test.ts
+++ b/packages/perseus/src/widgets/radio/__tests__/radio.test.ts
@@ -1,16 +1,18 @@
 import {describe, beforeEach, it} from "@jest/globals";
+import {
+    scoreRadio,
+    type PerseusRadioUserInput,
+} from "@khanacademy/perseus-score";
 import {act, screen, fireEvent, waitFor} from "@testing-library/react";
 import {userEvent as userEventLib} from "@testing-library/user-event";
 
 import {clone} from "../../../../../../testing/object-utils";
 import {testDependencies} from "../../../../../../testing/test-dependencies";
 import * as Dependencies from "../../../dependencies";
-import {mockStrings} from "../../../strings";
 import {scorePerseusItemTesting} from "../../../util/test-utils";
 import {renderQuestion} from "../../__testutils__/renderQuestion";
 import PassageWidget from "../../passage";
 import RadioWidgetExport from "../radio";
-import scoreRadio from "../score-radio";
 
 import {
     questionAndAnswer,
@@ -20,7 +22,6 @@ import {
 } from "./radio.testdata";
 
 import type {APIOptions} from "../../../types";
-import type {PerseusRadioUserInput} from "../../../validation.types";
 import type {
     PerseusRadioWidgetOptions,
     PerseusRenderer,
@@ -901,9 +902,7 @@ describe("Radio Widget", () => {
             );
 
             // Assert
-            expect(score).toHaveInvalidInput(
-                "Please choose the correct number of answers",
-            );
+            expect(score).toHaveInvalidInput("CHOOSE_CORRECT_NUM_ERROR");
         });
 
         it.each(incorrect)(
@@ -967,7 +966,7 @@ describe("Radio Widget", () => {
             const userInput =
                 renderer.getUserInput()[0] as PerseusRadioUserInput;
             const rubric = shuffledQuestion.widgets["radio 1"].options;
-            const widgetScore = scoreRadio(userInput, rubric, mockStrings);
+            const widgetScore = scoreRadio(userInput, rubric);
             const rendererScore = scorePerseusItemTesting(
                 shuffledQuestion,
                 renderer.getUserInputMap(),
@@ -995,7 +994,7 @@ describe("Radio Widget", () => {
             const userInput =
                 renderer.getUserInput()[0] as PerseusRadioUserInput;
             const rubric = shuffledQuestion.widgets["radio 1"].options;
-            const widgetScore = scoreRadio(userInput, rubric, mockStrings);
+            const widgetScore = scoreRadio(userInput, rubric);
             const rendererScore = scorePerseusItemTesting(
                 shuffledQuestion,
                 renderer.getUserInputMap(),
@@ -1023,7 +1022,7 @@ describe("Radio Widget", () => {
             const userInput =
                 renderer.getUserInput()[0] as PerseusRadioUserInput;
             const rubric = shuffledNoneQuestion.widgets["radio 1"].options;
-            const widgetScore = scoreRadio(userInput, rubric, mockStrings);
+            const widgetScore = scoreRadio(userInput, rubric);
             const rendererScore = scorePerseusItemTesting(
                 shuffledNoneQuestion,
                 renderer.getUserInputMap(),
@@ -1051,7 +1050,7 @@ describe("Radio Widget", () => {
             const userInput =
                 renderer.getUserInput()[0] as PerseusRadioUserInput;
             const rubric = shuffledNoneQuestion.widgets["radio 1"].options;
-            const widgetScore = scoreRadio(userInput, rubric, mockStrings);
+            const widgetScore = scoreRadio(userInput, rubric);
             const rendererScore = scorePerseusItemTesting(
                 shuffledQuestion,
                 renderer.getUserInputMap(),
diff --git a/packages/perseus/src/widgets/radio/radio-component.tsx b/packages/perseus/src/widgets/radio/radio-component.tsx
index 7683f4db31..501b08f993 100644
--- a/packages/perseus/src/widgets/radio/radio-component.tsx
+++ b/packages/perseus/src/widgets/radio/radio-component.tsx
@@ -1,4 +1,9 @@
 import {linterContextDefault} from "@khanacademy/perseus-linter";
+import {
+    scoreRadio,
+    type PerseusRadioRubric,
+    type PerseusRadioUserInput,
+} from "@khanacademy/perseus-score";
 import * as React from "react";
 
 import {PerseusI18nContext} from "../../components/i18n-context";
@@ -8,14 +13,9 @@ import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/radio/radio
 import PassageRef from "../passage-ref/passage-ref";
 
 import BaseRadio from "./base-radio";
-import scoreRadio from "./score-radio";
 
 import type {FocusFunction, ChoiceType} from "./base-radio";
 import type {WidgetProps, ChoiceState, Widget} from "../../types";
-import type {
-    PerseusRadioRubric,
-    PerseusRadioUserInput,
-} from "../../validation.types";
 import type {RadioPromptJSON} from "../../widget-ai-utils/radio/radio-ai-utils";
 import type {
     PerseusRadioChoice,
@@ -271,11 +271,7 @@ class Radio extends React.Component<Props> implements Widget {
     ) => void = (rubric) => {
         const {choiceStates} = this.props;
         if (choiceStates) {
-            const score = scoreRadio(
-                this.getUserInput(),
-                rubric,
-                this.context.strings,
-            );
+            const score = scoreRadio(this.getUserInput(), rubric);
             const widgetCorrect =
                 score.type === "points" && score.total === score.earned;
 
diff --git a/packages/perseus/src/widgets/radio/radio.ts b/packages/perseus/src/widgets/radio/radio.ts
index 25778f91a5..c832796a7b 100644
--- a/packages/perseus/src/widgets/radio/radio.ts
+++ b/packages/perseus/src/widgets/radio/radio.ts
@@ -1,9 +1,9 @@
+import {scoreRadio} from "@khanacademy/perseus-score";
 import _ from "underscore";
 
 import Util from "../../util";
 
 import Radio from "./radio-component";
-import scoreRadio from "./score-radio";
 
 import type {RenderProps, RadioChoiceWithMetadata} from "./radio-component";
 import type {PerseusStrings} from "../../strings";
diff --git a/packages/perseus/src/widgets/sorter/sorter.tsx b/packages/perseus/src/widgets/sorter/sorter.tsx
index b50cd8750d..baacc2201b 100644
--- a/packages/perseus/src/widgets/sorter/sorter.tsx
+++ b/packages/perseus/src/widgets/sorter/sorter.tsx
@@ -1,18 +1,17 @@
 import {linterContextDefault} from "@khanacademy/perseus-linter";
+import {
+    scoreSorter,
+    type PerseusSorterRubric,
+    type PerseusSorterUserInput,
+} from "@khanacademy/perseus-score";
 import * as React from "react";
 
 import Sortable from "../../components/sortable";
 import Util from "../../util";
 import {getPromptJSON as _getPromptJSON} from "../../widget-ai-utils/sorter/sorter-ai-utils";
 
-import scoreSorter from "./score-sorter";
-
 import type {SortableOption} from "../../components/sortable";
 import type {Widget, WidgetExports, WidgetProps} from "../../types";
-import type {
-    PerseusSorterRubric,
-    PerseusSorterUserInput,
-} from "../../validation.types";
 import type {SorterPromptJSON} from "../../widget-ai-utils/sorter/sorter-ai-utils";
 import type {PerseusSorterWidgetOptions} from "@khanacademy/perseus-core";
 
diff --git a/packages/perseus/src/widgets/table/table.tsx b/packages/perseus/src/widgets/table/table.tsx
index 6b2fd35b1c..44c25afef3 100644
--- a/packages/perseus/src/widgets/table/table.tsx
+++ b/packages/perseus/src/widgets/table/table.tsx
@@ -1,4 +1,9 @@
 import {linterContextDefault} from "@khanacademy/perseus-linter";
+import {
+    scoreTable,
+    type PerseusTableRubric,
+    type PerseusTableUserInput,
+} from "@khanacademy/perseus-score";
 import * as React from "react";
 import ReactDOM from "react-dom";
 import _ from "underscore";
@@ -10,14 +15,8 @@ import {ApiOptions} from "../../perseus-api";
 import Renderer from "../../renderer";
 import Util from "../../util";
 
-import scoreTable from "./score-table";
-
 import type {ChangeableProps} from "../../mixins/changeable";
 import type {Widget, WidgetExports, WidgetProps} from "../../types";
-import type {
-    PerseusTableRubric,
-    PerseusTableUserInput,
-} from "../../validation.types";
 import type {PerseusTableWidgetOptions} from "@khanacademy/perseus-core";
 
 const {assert} = InteractiveUtil;

From 518b005f2b0b9a173dec6526a7b5c808062fe144 Mon Sep 17 00:00:00 2001
From: Ben Christel <benchristel@users.noreply.github.com>
Date: Fri, 17 Jan 2025 14:20:01 -0800
Subject: [PATCH 05/10] Fix a React warning about non-unique component keys in
 the editor (#2126)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

## Summary:
WidgetOptions has a `key` field (which appears to be unused, but that's
a different discussion) which is often not present in the JSON data.
This field, when absent from the JSON, was getting set to `undefined` by
`parseAndMigratePerseusItem()`. The `undefined` value then overrode the
`key` prop which we intended to set on the WidgetEditor component, which
caused React to log an error about non-unique keys.

I've changed the order of the props so the keys we want to set
explicitly will override any fields parsed out of the widget JSON. This
is what we want anyway, since the JSON might contain absolutely
anything, and we don't want it to be able to set arbitrary editor props.

I discovered this bug while hooking up `parseAndMigratePerseusItem` in
webapp (https://github.com/Khan/webapp/pull/28551)

Issue: https://khanacademy.atlassian.net/browse/LEMS-2774

Test plan:

`yarn test`

Author: benchristel

Reviewers: jeremywiebe, handeyeco

Required Reviewers:

Approved By: jeremywiebe

Checks: ✅ Publish npm snapshot (ubuntu-latest, 20.x), ✅ Lint, Typecheck, Format, and Test (ubuntu-latest, 20.x), ✅ Check builds for changes in size (ubuntu-latest, 20.x), ✅ Cypress (ubuntu-latest, 20.x), ✅ Check for .changeset entries for all changed files (ubuntu-latest, 20.x), ✅ Publish Storybook to Chromatic (ubuntu-latest, 20.x)

Pull Request URL: https://github.com/Khan/perseus/pull/2126
---
 .changeset/slimy-scissors-smash.md            |  5 +++++
 .../src/__tests__/editor.test.tsx             | 22 +++++++++++++++++++
 packages/perseus-editor/src/editor.tsx        |  6 ++++-
 3 files changed, 32 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/slimy-scissors-smash.md

diff --git a/.changeset/slimy-scissors-smash.md b/.changeset/slimy-scissors-smash.md
new file mode 100644
index 0000000000..f2d5ffc205
--- /dev/null
+++ b/.changeset/slimy-scissors-smash.md
@@ -0,0 +1,5 @@
+---
+"@khanacademy/perseus-editor": patch
+---
+
+Fix a React warning about non-unique component keys in the exercise editor.
diff --git a/packages/perseus-editor/src/__tests__/editor.test.tsx b/packages/perseus-editor/src/__tests__/editor.test.tsx
index 2eb2fc1413..35b7f392f6 100644
--- a/packages/perseus-editor/src/__tests__/editor.test.tsx
+++ b/packages/perseus-editor/src/__tests__/editor.test.tsx
@@ -143,4 +143,26 @@ describe("Editor", () => {
             undefined,
         );
     });
+
+    it("should not log a warning given a widget with an undefined key", () => {
+        const consoleErrorSpy = jest.spyOn(console, "error");
+
+        render(
+            <Harnessed
+                widgets={{
+                    "image 1": {
+                        type: "image",
+                        key: undefined,
+                        options: {
+                            backgroundImage: {
+                                url: "http://placekitten.com/200/300",
+                            },
+                        },
+                    },
+                }}
+            />,
+        );
+
+        expect(consoleErrorSpy).not.toHaveBeenCalled();
+    });
 });
diff --git a/packages/perseus-editor/src/editor.tsx b/packages/perseus-editor/src/editor.tsx
index 13a66f2a17..99a357b3c3 100644
--- a/packages/perseus-editor/src/editor.tsx
+++ b/packages/perseus-editor/src/editor.tsx
@@ -250,6 +250,11 @@ class Editor extends React.Component<Props, State> {
         }
         return (
             <WidgetEditor
+                // The order of props matters here. We need to spread the
+                // widget data before specifying the `key` prop, to ensure the
+                // key overrides any `key` field on the widget (which might not
+                // be unique.
+                {...this.props.widgets[id]}
                 ref={id}
                 id={id}
                 key={id}
@@ -259,7 +264,6 @@ class Editor extends React.Component<Props, State> {
                 onRemove={this._handleWidgetEditorRemove.bind(this, id)}
                 apiOptions={this.props.apiOptions}
                 widgetIsOpen={this.props.widgetIsOpen}
-                {...this.props.widgets[id]}
             />
         );
     }

From 6f2813cfcb6bce063d8f0f8f66219ce0123aac66 Mon Sep 17 00:00:00 2001
From: Ben Christel <benchristel@users.noreply.github.com>
Date: Fri, 17 Jan 2025 16:18:51 -0800
Subject: [PATCH 06/10] Don't add undefined values to objects when parsing JSON
 (#2127)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

## Summary:
Previously, when parsing typed objects from JSON, we would add
`[key]: undefined` for any fields that were specified in the parser schema but
were absent from the JSON. This was a difference from the behavior of
`JSON.parse()` that could cause bugs in some cases (e.g. if a parsed
object was spread into another object, it could overwrite existing
values with `undefined` when that was not intended).

Thus, to better match the behavior of `JSON.parse()`, we now omit
`undefined` values from the parsed object if they are not present on the
original object.

This PR was inspired by test failures on https://github.com/Khan/webapp/pull/28551.
I'm making this change out of an abundance of caution.

Issue: LEMS-2774

Test plan:

`yarn test`

Author: benchristel

Reviewers: jeremywiebe, handeyeco

Required Reviewers:

Approved By: jeremywiebe

Checks: ✅ Publish npm snapshot (ubuntu-latest, 20.x), ✅ Lint, Typecheck, Format, and Test (ubuntu-latest, 20.x), ✅ Check builds for changes in size (ubuntu-latest, 20.x), ✅ Check for .changeset entries for all changed files (ubuntu-latest, 20.x), ✅ Publish Storybook to Chromatic (ubuntu-latest, 20.x), ✅ Cypress (ubuntu-latest, 20.x)

Pull Request URL: https://github.com/Khan/perseus/pull/2127
---
 .changeset/happy-pets-breathe.md              |    5 +
 .../general-purpose-parsers/object.test.ts    |   18 +-
 .../general-purpose-parsers/object.ts         |    4 +-
 .../parse-perseus-json-snapshot.test.ts.snap  | 1422 +----------------
 4 files changed, 26 insertions(+), 1423 deletions(-)
 create mode 100644 .changeset/happy-pets-breathe.md

diff --git a/.changeset/happy-pets-breathe.md b/.changeset/happy-pets-breathe.md
new file mode 100644
index 0000000000..414ae86dad
--- /dev/null
+++ b/.changeset/happy-pets-breathe.md
@@ -0,0 +1,5 @@
+---
+"@khanacademy/perseus": minor
+---
+
+Avoid adding undefined values to objects parsed from Perseus JSON when properties are missing.
diff --git a/packages/perseus/src/util/parse-perseus-json/general-purpose-parsers/object.test.ts b/packages/perseus/src/util/parse-perseus-json/general-purpose-parsers/object.test.ts
index 7981ea3a39..e65d8b18f3 100644
--- a/packages/perseus/src/util/parse-perseus-json/general-purpose-parsers/object.test.ts
+++ b/packages/perseus/src/util/parse-perseus-json/general-purpose-parsers/object.test.ts
@@ -1,9 +1,10 @@
-import {assertFailure, success} from "../result";
+import {assertFailure, assertSuccess, success} from "../result";
 
 import {array} from "./array";
 import {defaulted} from "./defaulted";
 import {number} from "./number";
 import {object} from "./object";
+import {optional} from "./optional";
 import {string} from "./string";
 import {anyFailure, ctx, parseFailureWith} from "./test-helpers";
 
@@ -93,4 +94,19 @@ describe("object", () => {
 
         expect(Train({}, ctx())).toEqual(success({boxcars: []}));
     });
+
+    it("does not include fields not present on the original object", () => {
+        const Penguin = object({hat: optional(string)});
+        const result = Penguin({}, ctx());
+        assertSuccess(result);
+        expect(result.value).not.toHaveProperty("hat");
+    });
+
+    it("includes `undefined` fields from the original object", () => {
+        const Penguin = object({hat: optional(string)});
+        const result = Penguin({hat: undefined}, ctx());
+        assertSuccess(result);
+        expect(result.value).toHaveProperty("hat");
+        expect(result.value.hat).toBe(undefined);
+    });
 });
diff --git a/packages/perseus/src/util/parse-perseus-json/general-purpose-parsers/object.ts b/packages/perseus/src/util/parse-perseus-json/general-purpose-parsers/object.ts
index 1f99b97772..8b54e10661 100644
--- a/packages/perseus/src/util/parse-perseus-json/general-purpose-parsers/object.ts
+++ b/packages/perseus/src/util/parse-perseus-json/general-purpose-parsers/object.ts
@@ -19,7 +19,9 @@ export function object<S extends ObjectSchema>(
         for (const [prop, propParser] of Object.entries(schema)) {
             const result = propParser(rawValue[prop], ctx.forSubtree(prop));
             if (isSuccess(result)) {
-                ret[prop] = result.value;
+                if (result.value !== undefined || prop in rawValue) {
+                    ret[prop] = result.value;
+                }
             } else {
                 mismatches.push(...result.detail);
             }
diff --git a/packages/perseus/src/util/parse-perseus-json/regression-tests/__snapshots__/parse-perseus-json-snapshot.test.ts.snap b/packages/perseus/src/util/parse-perseus-json/regression-tests/__snapshots__/parse-perseus-json-snapshot.test.ts.snap
index d0cc4ff18d..48cd27db6f 100644
--- a/packages/perseus/src/util/parse-perseus-json/regression-tests/__snapshots__/parse-perseus-json-snapshot.test.ts.snap
+++ b/packages/perseus/src/util/parse-perseus-json/regression-tests/__snapshots__/parse-perseus-json-snapshot.test.ts.snap
@@ -2,7 +2,6 @@
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/categorizer-missing-randomizeItems.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -16,18 +15,14 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/categorizer-missing-
 
 [[☃ categorizer 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "categorizer 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "categories": [
             "Non-renewable Energy Sources",
             "Renewable Energy Sources",
           ],
-          "highlightLint": undefined,
           "items": [
             "Coal",
             "Wind",
@@ -37,7 +32,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/categorizer-missing-
             "Petroleum",
             "Solar",
           ],
-          "linterContext": undefined,
           "randomizeItems": false,
           "static": false,
           "values": [
@@ -50,7 +44,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/categorizer-missing-
             1,
           ],
         },
-        "static": undefined,
         "type": "categorizer",
         "version": {
           "major": 0,
@@ -64,7 +57,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/categorizer-missing-
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/categorizer-missing-static.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -78,30 +70,24 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/categorizer-missing-
 
 [[☃ categorizer 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "categorizer 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "categories": [
             "one",
             "two",
             "three",
           ],
-          "highlightLint": undefined,
           "items": [
             "this",
             "that",
             "other",
           ],
-          "linterContext": undefined,
           "randomizeItems": true,
           "static": false,
           "values": [],
         },
-        "static": undefined,
         "type": "categorizer",
         "version": {
           "major": 0,
@@ -115,7 +101,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/categorizer-missing-
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/categorizer-with-null-value.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -133,19 +118,16 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/categorizer-with-nul
 
 [[☃ categorizer 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "categorizer 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "categories": [
             "Transparent",
             "Translucent",
             "Opaque",
           ],
-          "highlightLint": undefined,
           "items": [
             "Water",
             "Clean glass",
@@ -185,7 +167,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/categorizer-with-nul
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/cs-program-missing-static.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "periodicTable": false,
@@ -209,16 +190,13 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/cs-program-missing-s
         "width": 300,
       },
     },
-    "metadata": undefined,
     "widgets": {
       "cs-program 1": {
         "alignment": "block",
         "graded": true,
-        "key": undefined,
         "options": {
           "height": 400,
           "programID": "5900231381221376",
-          "programType": undefined,
           "settings": [
             {
               "name": "",
@@ -230,7 +208,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/cs-program-missing-s
           "static": false,
           "width": 400,
         },
-        "static": undefined,
         "type": "cs-program",
         "version": {
           "major": 0,
@@ -240,12 +217,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/cs-program-missing-s
       "numeric-input 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
-          "answerForms": undefined,
           "answers": [
             {
-              "answerForms": undefined,
               "maxError": 0.05,
               "message": "",
               "simplify": "required",
@@ -256,11 +230,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/cs-program-missing-s
           ],
           "coefficient": false,
           "labelText": "",
-          "rightAlign": undefined,
           "size": "normal",
           "static": false,
         },
-        "static": undefined,
         "type": "numeric-input",
         "version": {
           "major": 0,
@@ -274,32 +246,24 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/cs-program-missing-s
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/cs-program-with-null-width.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {},
   "hints": [],
-  "itemDataVersion": undefined,
   "question": {
     "content": "[[☃ cs-program 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "cs-program 1": {
         "alignment": "block",
-        "graded": undefined,
-        "key": undefined,
         "options": {
           "height": 250,
           "programID": "4545417404481536",
-          "programType": undefined,
           "settings": [],
           "showButtons": true,
           "showEditor": true,
           "static": false,
           "width": null,
         },
-        "static": undefined,
         "type": "cs-program",
-        "version": undefined,
       },
     },
   },
@@ -308,7 +272,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/cs-program-with-null
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/definition-missing-static.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -330,19 +293,16 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/definition-missing-s
 
 ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "categorizer 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "categories": [
             "Increases",
             "Decreases",
             "Stays constant",
           ],
-          "highlightLint": undefined,
           "items": [
             "Speed",
             "Acceleration",
@@ -368,15 +328,11 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/definition-missing-s
         },
       },
       "definition 1": {
-        "alignment": undefined,
-        "graded": undefined,
-        "key": undefined,
         "options": {
           "definition": "",
           "static": false,
           "togglePrompt": "",
         },
-        "static": undefined,
         "type": "definition",
         "version": {
           "major": 0,
@@ -390,7 +346,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/definition-missing-s
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/dropdown-missing-placeholder.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -400,19 +355,14 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/dropdown-missing-pla
 
 This is true whether the number is positive, negative, or $0$.",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "$(x-x)=0$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
-  "itemDataVersion": undefined,
   "question": {
     "content": "**Compare the two values using the number line below.**  
 
@@ -425,14 +375,10 @@ $\\qquad(x-x)$ [[☃ dropdown 1]] $0$
         "width": 460,
       },
     },
-    "metadata": undefined,
     "widgets": {
       "dropdown 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
-          "ariaLabel": undefined,
           "choices": [
             {
               "content": ">",
@@ -449,11 +395,8 @@ $\\qquad(x-x)$ [[☃ dropdown 1]] $0$
           ],
           "placeholder": "",
           "static": false,
-          "visibleLabel": undefined,
         },
-        "static": undefined,
         "type": "dropdown",
-        "version": undefined,
       },
     },
   },
@@ -462,7 +405,6 @@ $\\qquad(x-x)$ [[☃ dropdown 1]] $0$
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/dropdown-missing-version.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -470,23 +412,16 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/dropdown-missing-ver
     {
       "content": "While the Articles of Confederation did not provide for a federal executive, delegates to the Continental Congress did elect a president.",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
-  "itemDataVersion": undefined,
   "question": {
     "content": "**Under the Articles of Confederation[[☃ dropdown 1]] chose the president of the United States.** ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "dropdown 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
-          "ariaLabel": undefined,
           "choices": [
             {
               "content": "state legislatures",
@@ -503,11 +438,8 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/dropdown-missing-ver
           ],
           "placeholder": "",
           "static": false,
-          "visibleLabel": undefined,
         },
-        "static": undefined,
         "type": "dropdown",
-        "version": undefined,
       },
     },
   },
@@ -516,7 +448,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/dropdown-missing-ver
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/explanation-missing-widgets-map.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "periodicTable": false,
@@ -525,8 +456,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/explanation-missing-
     {
       "content": "What times $a$ gives us $b$?",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -534,20 +463,14 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/explanation-missing-
 
 > $b=\\blue{0.25}a$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "The *constant of proportionality* $(r)$ in the equation $b=ra$ is $\\blue{0.25}$.",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {
         "explanation 1": {
-          "alignment": undefined,
           "graded": true,
-          "key": undefined,
           "options": {
             "explanation": "Let's check the values of $a$ and $b$ given in the table above.",
             "hidePrompt": "Okay, I'm convinced.",
@@ -555,7 +478,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/explanation-missing-
             "static": false,
             "widgets": {},
           },
-          "static": undefined,
           "type": "explanation",
           "version": {
             "major": 0,
@@ -582,17 +504,12 @@ $32$ | $8$
 
 $r =  $ [[☃ numeric-input 1]] ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "numeric-input 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
-          "answerForms": undefined,
           "answers": [
             {
-              "answerForms": undefined,
               "maxError": null,
               "message": "",
               "simplify": "required",
@@ -603,11 +520,9 @@ $r =  $ [[☃ numeric-input 1]] ",
           ],
           "coefficient": false,
           "labelText": "",
-          "rightAlign": undefined,
           "size": "normal",
           "static": false,
         },
-        "static": undefined,
         "type": "numeric-input",
         "version": {
           "major": 0,
@@ -621,7 +536,6 @@ $r =  $ [[☃ numeric-input 1]] ",
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/expression-answerForm-missing-form.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -641,12 +555,10 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/expression-answerFor
 
 [[☃ expression 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "expression 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "answerForms": [
             {
@@ -657,19 +569,16 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/expression-answerFor
               "value": "j<14",
             },
           ],
-          "ariaLabel": undefined,
           "buttonSets": [
             "basic",
             "basic relations",
             "advanced relations",
           ],
-          "buttonsVisible": undefined,
           "functions": [
             "f",
             "g",
           ],
           "times": false,
-          "visibleLabel": undefined,
         },
         "static": false,
         "type": "expression",
@@ -685,12 +594,10 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/expression-answerFor
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/expression-missing-buttonSets.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
   "hints": [],
-  "itemDataVersion": undefined,
   "question": {
     "content": " $ax + by = c$
 
@@ -703,12 +610,9 @@ $y=$ [[☃ expression 1]]",
         "width": 291,
       },
     },
-    "metadata": undefined,
     "widgets": {
       "expression 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "answerForms": [
             {
@@ -734,7 +638,6 @@ $y=$ [[☃ expression 1]]",
           "times": false,
           "visibleLabel": undefined,
         },
-        "static": undefined,
         "type": "expression",
         "version": {
           "major": 1,
@@ -748,7 +651,6 @@ $y=$ [[☃ expression 1]]",
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/expression-option-missing-value.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "periodicTable": false,
@@ -765,28 +667,22 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/expression-option-mi
 
 [[☃ expression 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "expression 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "answerForms": [],
-          "ariaLabel": undefined,
           "buttonSets": [
             "basic",
           ],
-          "buttonsVisible": undefined,
           "functions": [
             "f",
             "g",
             "h",
           ],
           "times": false,
-          "visibleLabel": undefined,
         },
-        "static": undefined,
         "type": "expression",
         "version": {
           "major": 1,
@@ -800,7 +696,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/expression-option-mi
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/expression-with-null-answer-key.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -815,8 +710,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/expression-with-null
           "width": 288,
         },
       },
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -826,8 +719,6 @@ $2 \\purple{b} = 6$
 
 $\\purple{b} = 3$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -837,8 +728,6 @@ $3\\pink{\\varphi} = \\pi$
 
 $\\pink{\\varphi} = \\dfrac{\\pi}{3}$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -846,8 +735,6 @@ $\\pink{\\varphi} = \\dfrac{\\pi}{3}$",
 
 $\\blue\\theta = \\dfrac{\\pi}{6}$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -862,8 +749,6 @@ $\\begin{align} \\red{a}^2+ \\purple{b}^2 &= 6^2 \\\\
 
 ($\\red{a}$ is positive because it's a length.)",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -871,8 +756,6 @@ $\\begin{align} \\red{a}^2+ \\purple{b}^2 &= 6^2 \\\\
 
 $\\begin{align}\\sin (\\blue{\\theta})&=\\dfrac{3}{6}\\\\ &= \\frac{1}{2}\\end{align}$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -890,8 +773,6 @@ $\\begin{align}\\sin (\\blue{\\theta})&=\\dfrac{3}{6}\\\\ &= \\frac{1}{2}\\end{a
 - $\\sin (\\blue{\\theta}) =\\dfrac{1}{2}$
 ",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
@@ -921,12 +802,9 @@ $\\qquad$![](https://ka-perseus-graphie.s3.amazonaws.com/bee05e004428ab4fb0d8af9
         "width": 288,
       },
     },
-    "metadata": undefined,
     "widgets": {
       "expression 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "answerForms": [
             {
@@ -937,21 +815,17 @@ $\\qquad$![](https://ka-perseus-graphie.s3.amazonaws.com/bee05e004428ab4fb0d8af9
               "value": "sqrt(3)*3",
             },
           ],
-          "ariaLabel": undefined,
           "buttonSets": [
             "basic",
             "prealgebra",
           ],
-          "buttonsVisible": undefined,
           "functions": [
             "f",
             "g",
             "h",
           ],
           "times": false,
-          "visibleLabel": undefined,
         },
-        "static": undefined,
         "type": "expression",
         "version": {
           "major": 1,
@@ -959,9 +833,7 @@ $\\qquad$![](https://ka-perseus-graphie.s3.amazonaws.com/bee05e004428ab4fb0d8af9
         },
       },
       "expression 2": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "answerForms": [
             {
@@ -972,21 +844,17 @@ $\\qquad$![](https://ka-perseus-graphie.s3.amazonaws.com/bee05e004428ab4fb0d8af9
               "value": "3",
             },
           ],
-          "ariaLabel": undefined,
           "buttonSets": [
             "basic",
             "prealgebra",
           ],
-          "buttonsVisible": undefined,
           "functions": [
             "f",
             "g",
             "h",
           ],
           "times": false,
-          "visibleLabel": undefined,
         },
-        "static": undefined,
         "type": "expression",
         "version": {
           "major": 1,
@@ -994,9 +862,7 @@ $\\qquad$![](https://ka-perseus-graphie.s3.amazonaws.com/bee05e004428ab4fb0d8af9
         },
       },
       "expression 3": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "answerForms": [
             {
@@ -1007,21 +873,17 @@ $\\qquad$![](https://ka-perseus-graphie.s3.amazonaws.com/bee05e004428ab4fb0d8af9
               "value": "pi/6",
             },
           ],
-          "ariaLabel": undefined,
           "buttonSets": [
             "basic",
             "prealgebra",
           ],
-          "buttonsVisible": undefined,
           "functions": [
             "f",
             "g",
             "h",
           ],
           "times": false,
-          "visibleLabel": undefined,
         },
-        "static": undefined,
         "type": "expression",
         "version": {
           "major": 1,
@@ -1029,9 +891,7 @@ $\\qquad$![](https://ka-perseus-graphie.s3.amazonaws.com/bee05e004428ab4fb0d8af9
         },
       },
       "expression 4": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "answerForms": [
             {
@@ -1049,21 +909,17 @@ $\\qquad$![](https://ka-perseus-graphie.s3.amazonaws.com/bee05e004428ab4fb0d8af9
               "value": "1/2",
             },
           ],
-          "ariaLabel": undefined,
           "buttonSets": [
             "basic",
             "prealgebra",
           ],
-          "buttonsVisible": undefined,
           "functions": [
             "f",
             "g",
             "h",
           ],
           "times": false,
-          "visibleLabel": undefined,
         },
-        "static": undefined,
         "type": "expression",
         "version": {
           "major": 1,
@@ -1077,7 +933,6 @@ $\\qquad$![](https://ka-perseus-graphie.s3.amazonaws.com/bee05e004428ab4fb0d8af9
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/graded-group-with-false-hint.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -1095,13 +950,11 @@ To find entry $(i,j)$ of the resulting product matrix, we calculate the vector *
 
 ",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {
         "explanation 1": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "explanation": "In general, vector dot product is an operation that takes two vectors of equal dimensions and returns a single real number.
 
@@ -1152,13 +1005,11 @@ The other entries of $\\text{H}$ can be found similarly.
           "width": 160,
         },
       },
-      "metadata": undefined,
       "replace": false,
       "widgets": {
         "graded-group 1": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "content": "**What is the appropriate calculation of $\\textbf{H}_{2,1}$?**
 
@@ -1168,44 +1019,30 @@ The other entries of $\\text{H}$ can be found similarly.
             "hasHint": false,
             "hint": null,
             "images": {},
-            "immutableWidgets": undefined,
             "title": "",
-            "widgetEnabled": undefined,
             "widgets": {
               "radio 1": {
                 "alignment": "default",
                 "graded": true,
-                "key": undefined,
                 "options": {
                   "choices": [
                     {
-                      "clue": undefined,
                       "content": "$1 \\cdot 4 + 3\\cdot 0 = 4$",
                       "correct": true,
-                      "isNoneOfTheAbove": undefined,
-                      "widgets": undefined,
                     },
                     {
-                      "clue": undefined,
                       "content": "$4 \\cdot 4 + 3\\cdot 3= 25$",
                       "correct": false,
-                      "isNoneOfTheAbove": undefined,
-                      "widgets": undefined,
                     },
                     {
-                      "clue": undefined,
                       "content": "$1 \\cdot 3 + 4\\cdot -1 = -1$",
-                      "correct": undefined,
                       "isNoneOfTheAbove": false,
-                      "widgets": undefined,
                     },
                   ],
-                  "countChoices": undefined,
                   "deselectEnabled": false,
                   "displayCount": null,
                   "hasNoneOfTheAbove": false,
                   "multipleSelect": false,
-                  "noneOfTheAbove": undefined,
                   "onePerLine": true,
                   "randomize": true,
                 },
@@ -1234,7 +1071,6 @@ After calculating all the remaining entries of $\\text{H}$, we get the following
 
 $ \\text{H}=\\left[\\begin{array}{rr}4 & -1 \\\\ 4 & 0\\end{array}\\right]$ ",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {},
     },
@@ -1251,12 +1087,10 @@ $ \\text{H}=\\left[\\begin{array}{rr}4 & -1 \\\\ 4 & 0\\end{array}\\right]$ ",
 [[☃ matrix 1]]
 ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "matrix 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "answers": [
             [
@@ -1294,7 +1128,6 @@ $ \\text{H}=\\left[\\begin{array}{rr}4 & -1 \\\\ 4 & 0\\end{array}\\right]$ ",
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/grapher-with-null-coords.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -1308,12 +1141,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/grapher-with-null-co
 
 ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "grapher 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "availableTypes": [
             "linear",
@@ -1331,10 +1161,7 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/grapher-with-null-co
           },
           "graph": {
             "backgroundImage": {
-              "bottom": undefined,
               "height": 0,
-              "left": undefined,
-              "scale": undefined,
               "url": null,
               "width": 0,
             },
@@ -1370,7 +1197,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/grapher-with-null-co
             "rulerTicks": 10,
             "showProtractor": false,
             "showRuler": false,
-            "showTooltips": undefined,
             "snapStep": [
               1,
               1,
@@ -1382,7 +1208,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/grapher-with-null-co
             "valid": true,
           },
         },
-        "static": undefined,
         "type": "grapher",
         "version": {
           "major": 0,
@@ -1396,7 +1221,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/grapher-with-null-co
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/hint-missing-images.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -1422,13 +1246,11 @@ If you haven't practiced [Systems of equations with elimination](/e/systems_of_e
 
 For more practice, go to [Systems of equations with elimination challenge](/e/systems_of_equations_with_elimination?getready=post).",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {
         "graded-group-set 2": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "gradedGroups": [
               {
@@ -1443,7 +1265,6 @@ $\\begin{align}
 $x=$ [[☃ numeric-input 1]]
 
 $y=$ [[☃ numeric-input 2]]",
-                "hasHint": undefined,
                 "hint": {
                   "content": "Let's solve the system by using the *elimination method.* In order to eliminate one of the variables, we need to manipulate the equations so that variable has coefficients of the same size but opposite signs in each equation.
 
@@ -1477,7 +1298,6 @@ $\\begin{align}
 &y=-\\dfrac{1}{3}
 \\end{align}$",
                   "images": {},
-                  "metadata": undefined,
                   "widgets": {},
                 },
                 "images": {},
@@ -1488,12 +1308,9 @@ $\\begin{align}
                   "numeric-input 1": {
                     "alignment": "default",
                     "graded": true,
-                    "key": undefined,
                     "options": {
-                      "answerForms": undefined,
                       "answers": [
                         {
-                          "answerForms": undefined,
                           "maxError": null,
                           "message": "",
                           "simplify": "required",
@@ -1519,9 +1336,7 @@ $\\begin{align}
                   "numeric-input 2": {
                     "alignment": "default",
                     "graded": true,
-                    "key": undefined,
                     "options": {
-                      "answerForms": undefined,
                       "answers": [
                         {
                           "answerForms": [
@@ -1564,7 +1379,6 @@ $\\begin{align}
 $x=$ [[☃ numeric-input 1]]
 
 $y=$ [[☃ numeric-input 2]]",
-                "hasHint": undefined,
                 "hint": {
                   "content": "Let's solve the system by using the *elimination method.* In order to eliminate one of the variables, we need to manipulate the equations so that variable has coefficients of the same size but opposite signs in each equation.
 
@@ -1595,7 +1409,6 @@ $\\begin{align} {72x}-\\maroonD{40y} &= -440 \\\\\\\\
 
 When we solve the resulting equation we obtain that $x = -5$. Then, we can substitute this into one of the original equations and solve for $y$ to obtain $y=2$.",
                   "images": {},
-                  "metadata": undefined,
                   "widgets": {},
                 },
                 "images": {},
@@ -1606,12 +1419,9 @@ When we solve the resulting equation we obtain that $x = -5$. Then, we can subst
                   "numeric-input 1": {
                     "alignment": "default",
                     "graded": true,
-                    "key": undefined,
                     "options": {
-                      "answerForms": undefined,
                       "answers": [
                         {
-                          "answerForms": undefined,
                           "maxError": null,
                           "message": "",
                           "simplify": "required",
@@ -1637,12 +1447,9 @@ When we solve the resulting equation we obtain that $x = -5$. Then, we can subst
                   "numeric-input 2": {
                     "alignment": "default",
                     "graded": true,
-                    "key": undefined,
                     "options": {
-                      "answerForms": undefined,
                       "answers": [
                         {
-                          "answerForms": undefined,
                           "maxError": null,
                           "message": "",
                           "simplify": "required",
@@ -1683,7 +1490,6 @@ When we solve the resulting equation we obtain that $x = -5$. Then, we can subst
 
 It is possible to solve any system of linear equations using the substitution method as long as you're comfortable working with fractions in your equations.",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {},
     },
@@ -1699,7 +1505,6 @@ Our strategic supplement version of algebra 1 is for students who are getting cl
 
 In case you would like a fuller experience, here is a taste of a skill you can learn in our full algebra 1 course.",
     "images": {},
-    "metadata": undefined,
     "widgets": {},
   },
 }
@@ -1707,7 +1512,6 @@ In case you would like a fuller experience, here is a taste of a skill you can l
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/iframe-missing-allowFullScreen.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -1717,21 +1521,12 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/iframe-missing-allow
 
 [[☃ image 1]]",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {
         "image 1": {
-          "alignment": undefined,
           "graded": true,
-          "key": undefined,
           "options": {
-            "alt": undefined,
             "backgroundImage": {
-              "bottom": undefined,
               "height": 215,
-              "left": undefined,
-              "scale": undefined,
-              "top": undefined,
               "url": "https://s3.amazonaws.com/ka-cs-algorithms/hanoi_exercise_step2_1.png",
               "width": 304,
             },
@@ -1739,7 +1534,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/iframe-missing-allow
               304,
               215,
             ],
-            "caption": undefined,
             "labels": [],
             "range": [
               [
@@ -1751,10 +1545,7 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/iframe-missing-allow
                 10,
               ],
             ],
-            "static": undefined,
-            "title": undefined,
           },
-          "static": undefined,
           "type": "image",
           "version": {
             "major": 0,
@@ -1773,15 +1564,11 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/iframe-missing-allow
 
 [[☃ iframe 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "iframe 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "allowFullScreen": false,
-          "allowTopNavigation": undefined,
           "height": "400",
           "settings": [
             {
@@ -1805,7 +1592,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/iframe-missing-allow
           "url": "4772835774169088",
           "width": 400,
         },
-        "static": undefined,
         "type": "iframe",
         "version": {
           "major": 0,
@@ -1819,31 +1605,22 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/iframe-missing-allow
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/iframe-missing-settings.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {},
   "hints": [],
-  "itemDataVersion": undefined,
   "question": {
     "content": "[[☃ iframe 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "iframe 1": {
         "alignment": "block",
-        "graded": undefined,
-        "key": undefined,
         "options": {
           "allowFullScreen": false,
-          "allowTopNavigation": undefined,
           "height": "550px",
-          "settings": undefined,
           "static": false,
           "url": "https://learnstorm.typeform.com/to/fnQ2tw?",
           "width": "100%",
         },
-        "static": undefined,
         "type": "iframe",
-        "version": undefined,
       },
     },
   },
@@ -1852,7 +1629,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/iframe-missing-setti
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/iframe-missing-static.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "periodicTable": false,
@@ -1863,16 +1639,11 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/iframe-missing-stati
 
 [[☃ iframe 1]]",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {
         "iframe 1": {
-          "alignment": undefined,
           "graded": true,
-          "key": undefined,
           "options": {
             "allowFullScreen": true,
-            "allowTopNavigation": undefined,
             "height": "235",
             "settings": [
               {
@@ -1884,7 +1655,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/iframe-missing-stati
             "url": "https://www.youtube.com/embed/qYD5iwhLzm8?enablejsapi=1&wmode=transparent&modestbranding=1&rel=0&frameborder='0'",
             "width": "425",
           },
-          "static": undefined,
           "type": "iframe",
           "version": {
             "major": 0,
@@ -1901,7 +1671,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/iframe-missing-stati
   "question": {
     "content": "This is a question.",
     "images": {},
-    "metadata": undefined,
     "widgets": {},
   },
 }
@@ -1909,7 +1678,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/iframe-missing-stati
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/input-number-with-boolean-value.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -1921,8 +1689,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/input-number-with-bo
  \\red{- 3|x - 5|}& && \\red{- 3|x - 5|} \\\\ \\\\
 & -3 &=& 1|x - 5| + 7 \\end{eqnarray} $",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -1932,8 +1698,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/input-number-with-bo
  \\red{- 7} && &\\red{- 7} \\\\ \\\\
  -10 &=& 1|x - 5| \\end{eqnarray} $",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -1941,15 +1705,11 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/input-number-with-bo
 
  $\\qquad -10 = |x - 5| $",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "The absolute value cannot be negative. Therefore, there is no solution.",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
@@ -1964,23 +1724,17 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/input-number-with-bo
 
 [[☃ radio 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "input-number 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "answerType": "number",
-          "customKeypad": undefined,
           "inexact": false,
           "maxError": 0.1,
-          "rightAlign": undefined,
           "simplify": "required",
           "size": "small",
           "value": 0,
         },
-        "static": undefined,
         "type": "input-number",
         "version": {
           "major": 0,
@@ -1988,20 +1742,15 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/input-number-with-bo
         },
       },
       "input-number 2": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "answerType": "number",
-          "customKeypad": undefined,
           "inexact": false,
           "maxError": 0.1,
-          "rightAlign": undefined,
           "simplify": "required",
           "size": "small",
           "value": "true",
         },
-        "static": undefined,
         "type": "input-number",
         "version": {
           "major": 0,
@@ -2009,50 +1758,36 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/input-number-with-bo
         },
       },
       "radio 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "choices": [
             {
               "clue": "Absolute values cannot be negative.",
               "content": "$-5$",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
               "clue": "Check your signs.",
               "content": " $5$",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
               "clue": "You might have made a sign error.",
               "content": " $15$",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "There are no solutions.",
               "correct": true,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
           ],
-          "countChoices": undefined,
           "deselectEnabled": false,
           "displayCount": null,
-          "hasNoneOfTheAbove": undefined,
           "multipleSelect": false,
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@@ -2066,7 +1801,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/input-number-with-bo
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/interaction-element-missing-constraints.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -2078,12 +1812,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interaction-element-
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     "content": "[[☃ interaction 1]]",
     "images": {},
-    "metadata": undefined,
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@@ -2207,12 +1938,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interaction-element-
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@@ -2257,7 +1985,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interaction-element-
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-        "static": undefined,
         "type": "interaction",
         "version": {
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@@ -2271,10 +1998,8 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interaction-element-
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/interaction-element-missing-key.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {},
   "hints": [],
-  "itemDataVersion": undefined,
   "question": {
     "content": "# Functions introduction
 
@@ -2311,12 +2036,9 @@ Next, we'll look at some other representations of functions!",
         "width": 400,
       },
     },
-    "metadata": undefined,
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@@ -2348,12 +2070,9 @@ Next, we'll look at some other representations of functions!",
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@@ -2402,7 +2121,6 @@ Next, we'll look at some other representations of functions!",
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           "static": false,
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-        "static": undefined,
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         "version": {
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@@ -2410,9 +2128,7 @@ Next, we'll look at some other representations of functions!",
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       },
       "interaction 2": {
-        "alignment": undefined,
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-        "key": undefined,
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@@ -2444,12 +2160,9 @@ Next, we'll look at some other representations of functions!",
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             "box": [
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@@ -2498,7 +2211,6 @@ Next, we'll look at some other representations of functions!",
           },
           "static": false,
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-        "static": undefined,
         "type": "interaction",
         "version": {
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@@ -2506,9 +2218,7 @@ Next, we'll look at some other representations of functions!",
         },
       },
       "interaction 3": {
-        "alignment": undefined,
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-        "key": undefined,
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@@ -2540,12 +2250,9 @@ Next, we'll look at some other representations of functions!",
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@@ -2594,7 +2301,6 @@ Next, we'll look at some other representations of functions!",
           },
           "static": false,
         },
-        "static": undefined,
         "type": "interaction",
         "version": {
           "major": 0,
@@ -2602,9 +2308,7 @@ Next, we'll look at some other representations of functions!",
         },
       },
       "interaction 4": {
-        "alignment": undefined,
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@@ -2636,12 +2340,9 @@ Next, we'll look at some other representations of functions!",
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@@ -2690,7 +2391,6 @@ Next, we'll look at some other representations of functions!",
           },
           "static": false,
         },
-        "static": undefined,
         "type": "interaction",
         "version": {
           "major": 0,
@@ -2698,9 +2398,7 @@ Next, we'll look at some other representations of functions!",
         },
       },
       "interaction 5": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "elements": [
             {
@@ -2732,12 +2430,9 @@ Next, we'll look at some other representations of functions!",
           "graph": {
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               "left": 0,
               "scale": 1,
-              "top": undefined,
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             "box": [
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@@ -2786,7 +2481,6 @@ Next, we'll look at some other representations of functions!",
           },
           "static": false,
         },
-        "static": undefined,
         "type": "interaction",
         "version": {
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@@ -2800,7 +2494,6 @@ Next, we'll look at some other representations of functions!",
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-backgroundImage-with-empty-string-coordinates.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "periodicTable": false,
@@ -2815,8 +2508,6 @@ $\\qquad d=\\blue 6+5\\\\~~~~~~~~~~=\\red{11}.$
 
 So we place one point at $(\\blue 6,\\red{11})$.",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -2826,8 +2517,6 @@ $\\qquad d=\\blue{10}+5=\\red{15}$.
 
 So the second point is at $(\\blue{10},\\red{15})$.",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -2840,8 +2529,6 @@ So the second point is at $(\\blue{10},\\red{15})$.",
           "width": 425,
         },
       },
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
@@ -2869,24 +2556,20 @@ $3$ | $8$
 
 [[☃ interactive-graph 1]]",
     "images": {},
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     "widgets": {
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@@ -2898,16 +2581,10 @@ $3$ | $8$
               ],
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-            "startCoords": undefined,
             "type": "point",
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           "gridStep": [
@@ -2918,7 +2595,6 @@ $3$ | $8$
             "w",
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-          "lockedFigures": undefined,
           "markings": "graph",
           "range": [
             [
@@ -2934,7 +2610,6 @@ $3$ | $8$
           "rulerTicks": 10,
           "showProtractor": false,
           "showRuler": false,
-          "showTooltips": undefined,
           "snapStep": [
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@@ -2944,7 +2619,6 @@ $3$ | $8$
             1,
           ],
         },
-        "static": undefined,
         "type": "interactive-graph",
         "version": {
           "major": 0,
@@ -2958,10 +2632,8 @@ $3$ | $8$
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-locked-line-missing-showPoint1.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {},
   "hints": [],
-  "itemDataVersion": undefined,
   "question": {
     "content": "Custom Axis Labels:
 [[☃ interactive-graph 1]]
@@ -2988,24 +2660,15 @@ Locked figures:
 [[☃ interactive-graph 8]]
 ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "interactive-graph 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
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-            "left": undefined,
-            "scale": undefined,
-            "top": undefined,
             "url": null,
-            "width": undefined,
           },
           "correct": {
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                 [
@@ -3069,16 +2732,10 @@ Locked figures:
               ],
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             "numSegments": 6,
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             "type": "segment",
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-          "fullGraphAriaDescription": undefined,
-          "fullGraphLabel": undefined,
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-            "coords": undefined,
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-            "startCoords": undefined,
             "type": "segment",
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           "gridStep": [
@@ -3089,7 +2746,6 @@ Locked figures:
             "\\text{Re}",
             "\\text{Im}",
           ],
-          "lockedFigures": undefined,
           "markings": "graph",
           "range": [
             [
@@ -3101,10 +2757,7 @@ Locked figures:
               10,
             ],
           ],
-          "rulerLabel": undefined,
-          "rulerTicks": undefined,
           "showProtractor": false,
-          "showRuler": undefined,
           "showTooltips": false,
           "snapStep": [
             0.5,
@@ -3125,19 +2778,11 @@ Locked figures:
       "interactive-graph 2": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "backgroundImage": {
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             "url": null,
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           },
           "correct": {
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@@ -3150,17 +2795,9 @@ Locked figures:
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             "type": "segment",
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             "type": "segment",
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@@ -3171,7 +2808,6 @@ Locked figures:
             "x",
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-          "lockedFigures": undefined,
           "markings": "graph",
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             [
@@ -3183,10 +2819,7 @@ Locked figures:
               100,
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           "showTooltips": false,
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             0.5,
@@ -3207,31 +2840,16 @@ Locked figures:
       "interactive-graph 3": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "backgroundImage": {
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             "type": "segment",
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@@ -3242,7 +2860,6 @@ Locked figures:
             "x",
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-          "lockedFigures": undefined,
           "markings": "graph",
           "range": [
             [
@@ -3254,10 +2871,7 @@ Locked figures:
               10,
             ],
           ],
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           "showProtractor": false,
-          "showRuler": undefined,
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             2.5,
@@ -3278,31 +2892,14 @@ Locked figures:
       "interactive-graph 4": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "backgroundImage": {
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-            "startCoords": undefined,
             "type": "segment",
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@@ -3313,7 +2910,6 @@ Locked figures:
             "x",
             "y",
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-          "lockedFigures": undefined,
           "markings": "graph",
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             [
@@ -3325,10 +2921,7 @@ Locked figures:
               3,
             ],
           ],
-          "rulerLabel": undefined,
-          "rulerTicks": undefined,
           "showProtractor": false,
-          "showRuler": undefined,
           "showTooltips": false,
           "snapStep": [
             0.25,
@@ -3349,31 +2942,14 @@ Locked figures:
       "interactive-graph 5": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "backgroundImage": {
-            "bottom": undefined,
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             "url": null,
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             "type": "segment",
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-          "fullGraphAriaDescription": undefined,
-          "fullGraphLabel": undefined,
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             "type": "segment",
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@@ -3384,7 +2960,6 @@ Locked figures:
             "x",
             "y",
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-          "lockedFigures": undefined,
           "markings": "graph",
           "range": [
             [
@@ -3396,10 +2971,7 @@ Locked figures:
               10,
             ],
           ],
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           "showProtractor": false,
-          "showRuler": undefined,
           "showTooltips": false,
           "snapStep": [
             1,
@@ -3420,31 +2992,14 @@ Locked figures:
       "interactive-graph 6": {
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         "options": {
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             "type": "segment",
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@@ -3455,7 +3010,6 @@ Locked figures:
             "x",
             "y",
           ],
-          "lockedFigures": undefined,
           "markings": "graph",
           "range": [
             [
@@ -3467,10 +3021,7 @@ Locked figures:
               5,
             ],
           ],
-          "rulerLabel": undefined,
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           "showProtractor": false,
-          "showRuler": undefined,
           "showTooltips": false,
           "snapStep": [
             0.25,
@@ -3491,31 +3042,14 @@ Locked figures:
       "interactive-graph 7": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "backgroundImage": {
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@@ -3526,7 +3060,6 @@ Locked figures:
             "x",
             "y",
           ],
-          "lockedFigures": undefined,
           "markings": "graph",
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             [
@@ -3538,10 +3071,7 @@ Locked figures:
               5,
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           ],
-          "rulerLabel": undefined,
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           "showProtractor": false,
-          "showRuler": undefined,
           "showTooltips": false,
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             1,
@@ -3562,19 +3092,11 @@ Locked figures:
       "interactive-graph 8": {
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         "graded": true,
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                 [
@@ -3589,7 +3111,6 @@ Locked figures:
             ],
             "hasBeenInteractedWith": true,
             "markings": "graph",
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             "range": [
               [
                 -10,
@@ -3604,16 +3125,9 @@ Locked figures:
               0.5,
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             "type": "segment",
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             "type": "segment",
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           "gridStep": [
@@ -3626,54 +3140,44 @@ Locked figures:
           ],
           "lockedFigures": [
             {
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               "filled": true,
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               "type": "point",
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@@ -3684,32 +3188,26 @@ Locked figures:
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@@ -3720,32 +3218,26 @@ Locked figures:
               "type": "line",
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@@ -3756,32 +3248,26 @@ Locked figures:
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               "color": "pink",
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@@ -3792,32 +3278,26 @@ Locked figures:
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               "color": "red",
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                   "coord": [
                     5,
                     -2,
                   ],
                   "filled": true,
-                  "labels": undefined,
                   "type": "point",
                 },
               ],
@@ -3828,32 +3308,26 @@ Locked figures:
               "type": "line",
             },
             {
-              "ariaLabel": undefined,
               "color": "red",
               "kind": "segment",
-              "labels": undefined,
               "lineStyle": "dashed",
               "points": [
                 {
-                  "ariaLabel": undefined,
                   "color": "green",
                   "coord": [
                     0,
                     -4,
                   ],
                   "filled": true,
-                  "labels": undefined,
                   "type": "point",
                 },
                 {
-                  "ariaLabel": undefined,
                   "color": "red",
                   "coord": [
                     5,
                     -3,
                   ],
                   "filled": false,
-                  "labels": undefined,
                   "type": "point",
                 },
               ],
@@ -3885,10 +3359,7 @@ Locked figures:
               10,
             ],
           ],
-          "rulerLabel": undefined,
-          "rulerTicks": undefined,
           "showProtractor": false,
-          "showRuler": undefined,
           "showTooltips": false,
           "snapStep": [
             0.5,
@@ -3913,7 +3384,6 @@ Locked figures:
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-missing-graph.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -3929,7 +3399,6 @@ Let's remember what magnetic dip means. It is the angle that the magnetic field
 
 *Tip: The **dip** angle is **positive** when the magnetic field **dips**!*",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {},
     },
@@ -3942,21 +3411,15 @@ Here, the dip angle is **positive**, so the magnetic field is **below** the hori
 
 As we can see the direction of the vertical component is downwards $(\\downarrow)$, now let's find the magnitude.",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {
         "image 1": {
           "alignment": "block",
           "graded": true,
-          "key": undefined,
           "options": {
             "alt": "",
             "backgroundImage": {
-              "bottom": undefined,
               "height": 151,
-              "left": undefined,
-              "scale": undefined,
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               "url": "https://ka-perseus-images.s3.amazonaws.com/d36824c27f73d6263d9a1c548ead1fdac535243e.svg",
               "width": 255,
             },
@@ -3998,13 +3461,11 @@ $\\begin{align}
 
 [[☃ explanation 1]]",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {
         "explanation 1": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "explanation": "We can move $\\purpleD {B_V}$ to the right in the diagram to get the right angle triangle as shown below.
 
@@ -4023,15 +3484,10 @@ $\\begin{align}
               "image 1": {
                 "alignment": "block",
                 "graded": true,
-                "key": undefined,
                 "options": {
                   "alt": "",
                   "backgroundImage": {
-                    "bottom": undefined,
                     "height": 156,
-                    "left": undefined,
-                    "scale": undefined,
-                    "top": undefined,
                     "url": "https://ka-perseus-images.s3.amazonaws.com/d3b512adb0f11756344a3838f91aa35eda75439b.svg",
                     "width": 255,
                   },
@@ -4062,36 +3518,21 @@ $\\begin{align}
                 },
               },
               "interactive-graph 1": {
-                "alignment": undefined,
-                "graded": undefined,
-                "key": undefined,
                 "options": {
                   "backgroundImage": {
-                    "bottom": undefined,
-                    "height": undefined,
-                    "left": undefined,
-                    "scale": undefined,
-                    "top": undefined,
                     "url": null,
-                    "width": undefined,
                   },
                   "correct": {
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                     "coords": null,
-                    "startCoords": undefined,
                     "type": "linear",
                   },
-                  "fullGraphAriaDescription": undefined,
-                  "fullGraphLabel": undefined,
                   "graph": {
                     "type": "linear",
                   },
-                  "gridStep": undefined,
                   "labels": [
                     "x",
                     "y",
                   ],
-                  "lockedFigures": undefined,
                   "markings": "graph",
                   "range": [
                     [
@@ -4108,14 +3549,12 @@ $\\begin{align}
                   "showProtractor": false,
                   "showRuler": false,
                   "showTooltips": false,
-                  "snapStep": undefined,
                   "step": [
                     1,
                     1,
                   ],
                   "valid": true,
                 },
-                "static": undefined,
                 "type": "interactive-graph",
                 "version": {
                   "major": 0,
@@ -4139,7 +3578,6 @@ $\\begin{align}
 $B_E\\ \\sin{45\\degree}\\downarrow$
 ",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {},
     },
@@ -4161,55 +3599,39 @@ $B_E\\ \\sin{45\\degree}\\downarrow$
         "width": 352,
       },
     },
-    "metadata": undefined,
     "widgets": {
       "radio 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "choices": [
             {
-              "clue": undefined,
               "content": "$B_E\\ \\cos{45\\degree} \\uparrow$",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "$B_E\\ \\cos{45\\degree} \\downarrow$",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "$B_E\\ \\sin{45\\degree} \\downarrow$",
               "correct": true,
               "isNoneOfTheAbove": false,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "$B_E\\ \\sin{45\\degree}\\uparrow$",
               "correct": false,
               "isNoneOfTheAbove": false,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "$B_E\\ \\tan {45\\degree} \\uparrow$",
               "correct": false,
               "isNoneOfTheAbove": false,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "$B_E\\ \\tan {45\\degree} \\downarrow$",
               "correct": false,
               "isNoneOfTheAbove": false,
-              "widgets": undefined,
             },
           ],
           "countChoices": false,
@@ -4217,8 +3639,6 @@ $B_E\\ \\sin{45\\degree}\\downarrow$
           "displayCount": null,
           "hasNoneOfTheAbove": false,
           "multipleSelect": false,
-          "noneOfTheAbove": undefined,
-          "onePerLine": undefined,
           "randomize": false,
         },
         "static": false,
@@ -4235,7 +3655,6 @@ $B_E\\ \\sin{45\\degree}\\downarrow$
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-missing-gridStep.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -4255,43 +3674,26 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-mi
 
 ",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {
         "interactive-graph 1": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "backgroundImage": {
-              "bottom": undefined,
-              "height": undefined,
-              "left": undefined,
-              "scale": undefined,
-              "top": undefined,
               "url": null,
-              "width": undefined,
             },
             "correct": {
-              "coord": undefined,
               "coords": null,
-              "startCoords": undefined,
               "type": "linear",
             },
-            "fullGraphAriaDescription": undefined,
-            "fullGraphLabel": undefined,
             "graph": {
-              "coord": undefined,
-              "coords": undefined,
-              "startCoords": undefined,
               "type": "linear",
             },
-            "gridStep": undefined,
             "labels": [
               "x",
               "y",
             ],
-            "lockedFigures": undefined,
             "markings": "graph",
             "range": [
               [
@@ -4303,12 +3705,8 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-mi
                 10,
               ],
             ],
-            "rulerLabel": undefined,
-            "rulerTicks": undefined,
             "showProtractor": false,
-            "showRuler": undefined,
             "showTooltips": false,
-            "snapStep": undefined,
             "step": [
               1,
               1,
@@ -4335,24 +3733,15 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-mi
 
 [[☃ interactive-graph 2]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "interactive-graph 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "backgroundImage": {
-            "bottom": undefined,
-            "height": undefined,
-            "left": undefined,
-            "scale": undefined,
-            "top": undefined,
             "url": null,
-            "width": undefined,
           },
           "correct": {
-            "coord": undefined,
             "coords": [
               [
                 -3,
@@ -4378,23 +3767,15 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-mi
               0.5,
               0.5,
             ],
-            "startCoords": undefined,
             "type": "linear",
           },
-          "fullGraphAriaDescription": undefined,
-          "fullGraphLabel": undefined,
           "graph": {
-            "coord": undefined,
-            "coords": undefined,
-            "startCoords": undefined,
             "type": "linear",
           },
-          "gridStep": undefined,
           "labels": [
             "x",
             "y",
           ],
-          "lockedFigures": undefined,
           "markings": "graph",
           "range": [
             [
@@ -4406,12 +3787,8 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-mi
               10,
             ],
           ],
-          "rulerLabel": undefined,
-          "rulerTicks": undefined,
           "showProtractor": false,
-          "showRuler": undefined,
           "showTooltips": false,
-          "snapStep": undefined,
           "step": [
             1,
             1,
@@ -4427,19 +3804,11 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-mi
       "interactive-graph 2": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "backgroundImage": {
-            "bottom": undefined,
-            "height": undefined,
-            "left": undefined,
-            "scale": undefined,
-            "top": undefined,
             "url": null,
-            "width": undefined,
           },
           "correct": {
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             "coords": [
               [
                 -3,
@@ -4465,23 +3834,15 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-mi
               0.5,
               0.5,
             ],
-            "startCoords": undefined,
             "type": "linear",
           },
-          "fullGraphAriaDescription": undefined,
-          "fullGraphLabel": undefined,
           "graph": {
-            "coord": undefined,
-            "coords": undefined,
-            "startCoords": undefined,
             "type": "linear",
           },
-          "gridStep": undefined,
           "labels": [
             "x",
             "y",
           ],
-          "lockedFigures": undefined,
           "markings": "graph",
           "range": [
             [
@@ -4493,12 +3854,8 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-mi
               10,
             ],
           ],
-          "rulerLabel": undefined,
-          "rulerTicks": undefined,
           "showProtractor": false,
-          "showRuler": undefined,
           "showTooltips": false,
-          "snapStep": undefined,
           "step": [
             1,
             1,
@@ -4518,7 +3875,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-mi
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-missing-labels.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -4530,8 +3886,6 @@ $R$ $(1,-3)$ is transformed into $R'$ $(4,4)$.
 
 ![](https://ka-perseus-graphie.s3.amazonaws.com/0450d707e93ac22809e8e4063f74b98bf35d079e.png)",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -4540,8 +3894,6 @@ $R$ $(1,-3)$ is transformed into $R'$ $(4,4)$.
 $G$ $(-3,-3)$ is transformed into $G'$ $(0,4)$.  
 $A$ $(1,0)$ is transformed into $A'$ $(4,7)$.  ",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -4550,35 +3902,27 @@ $A$ $(1,0)$ is transformed into $A'$ $(4,7)$.  ",
 ![](https://ka-perseus-graphie.s3.amazonaws.com/dcbfde322f50640db9f40bf4b79824ad9014d8db.png)
 ",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
-  "itemDataVersion": undefined,
   "question": {
     "content": "**Arrange the vertices of the movable triangle to construct the image of $\\triangle GAR$ after a translation by $\\langle3,7\\rangle$.**
 
 [[☃ interactive-graph 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "interactive-graph 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "backgroundImage": {
             "bottom": 0,
             "height": 425,
             "left": 0,
             "scale": 1,
-            "top": undefined,
             "url": "https://ka-perseus-graphie.s3.amazonaws.com/31eb6c4f83e061ca7e28bb4382469cb4d682f7b4.png",
             "width": 425,
           },
           "correct": {
-            "coord": undefined,
             "coords": [
               [
                 4,
@@ -4593,29 +3937,13 @@ $A$ $(1,0)$ is transformed into $A'$ $(4,7)$.  ",
                 4,
               ],
             ],
-            "match": undefined,
             "numSides": 3,
-            "showAngles": undefined,
-            "showSides": undefined,
-            "snapTo": undefined,
-            "startCoords": undefined,
             "type": "polygon",
           },
-          "fullGraphAriaDescription": undefined,
-          "fullGraphLabel": undefined,
           "graph": {
-            "coord": undefined,
-            "match": undefined,
             "numSides": 3,
-            "showAngles": undefined,
-            "showSides": undefined,
-            "snapTo": undefined,
-            "startCoords": undefined,
             "type": "polygon",
           },
-          "gridStep": undefined,
-          "labels": undefined,
-          "lockedFigures": undefined,
           "markings": "none",
           "range": [
             [
@@ -4627,20 +3955,13 @@ $A$ $(1,0)$ is transformed into $A'$ $(4,7)$.  ",
               10,
             ],
           ],
-          "rulerLabel": undefined,
-          "rulerTicks": undefined,
           "showProtractor": false,
-          "showRuler": undefined,
-          "showTooltips": undefined,
-          "snapStep": undefined,
           "step": [
             1,
             1,
           ],
         },
-        "static": undefined,
         "type": "interactive-graph",
-        "version": undefined,
       },
     },
   },
@@ -4649,7 +3970,6 @@ $A$ $(1,0)$ is transformed into $A'$ $(4,7)$.  ",
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-polygon-with-exact-match.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -4664,8 +3984,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-po
           "width": 425,
         },
       },
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -4680,8 +3998,6 @@ Plotting the remaining vertices at $(8,7)$ and $(5,3)$ gives the rhombus sides o
           "width": 425,
         },
       },
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -4695,8 +4011,6 @@ We end up with a rhombus that looks like this:
           "width": 425,
         },
       },
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
@@ -4713,24 +4027,17 @@ Draw the rhombus in the first quadrant.
 
 [[☃ interactive-graph 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "interactive-graph 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "backgroundImage": {
             "bottom": 0,
-            "height": undefined,
             "left": 0,
             "scale": 1,
-            "top": undefined,
             "url": null,
-            "width": undefined,
           },
           "correct": {
-            "coord": undefined,
             "coords": [
               [
                 3,
@@ -4751,22 +4058,14 @@ Draw the rhombus in the first quadrant.
             ],
             "match": "exact",
             "numSides": "unlimited",
-            "showAngles": undefined,
             "showSides": true,
             "snapTo": "grid",
-            "startCoords": undefined,
             "type": "polygon",
           },
-          "fullGraphAriaDescription": undefined,
-          "fullGraphLabel": undefined,
           "graph": {
-            "coord": undefined,
-            "match": undefined,
             "numSides": "unlimited",
-            "showAngles": undefined,
             "showSides": true,
             "snapTo": "grid",
-            "startCoords": undefined,
             "type": "polygon",
           },
           "gridStep": [
@@ -4777,7 +4076,6 @@ Draw the rhombus in the first quadrant.
             "x",
             "y",
           ],
-          "lockedFigures": undefined,
           "markings": "graph",
           "range": [
             [
@@ -4793,7 +4091,6 @@ Draw the rhombus in the first quadrant.
           "rulerTicks": 10,
           "showProtractor": false,
           "showRuler": false,
-          "showTooltips": undefined,
           "snapStep": [
             1,
             1,
@@ -4803,7 +4100,6 @@ Draw the rhombus in the first quadrant.
             1,
           ],
         },
-        "static": undefined,
         "type": "interactive-graph",
         "version": {
           "major": 0,
@@ -4817,7 +4113,6 @@ Draw the rhombus in the first quadrant.
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-with-string-backgroundImage-left.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -4840,24 +4135,20 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-wi
 **How far along will Ally be in the race when she reaches her family?**  
 [[☃ radio 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "interactive-graph 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "backgroundImage": {
             "bottom": 4,
             "height": 0,
             "left": 0,
             "scale": 1,
-            "top": undefined,
             "url": "",
             "width": 0,
           },
           "correct": {
-            "coord": undefined,
             "coords": [
               [
                 4,
@@ -4873,16 +4164,10 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-wi
               ],
             ],
             "numPoints": 3,
-            "startCoords": undefined,
             "type": "point",
           },
-          "fullGraphAriaDescription": undefined,
-          "fullGraphLabel": undefined,
           "graph": {
-            "coord": undefined,
-            "coords": undefined,
             "numPoints": 3,
-            "startCoords": undefined,
             "type": "point",
           },
           "gridStep": [
@@ -4893,7 +4178,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-wi
             "x",
             "y",
           ],
-          "lockedFigures": undefined,
           "markings": "graph",
           "range": [
             [
@@ -4929,29 +4213,18 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-wi
       "radio 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "choices": [
             {
-              "clue": undefined,
               "content": "Less than halfway through the race",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "Halfway through the race",
               "correct": true,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "More than halfway through the race",
-              "correct": undefined,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
           ],
           "countChoices": false,
@@ -4959,8 +4232,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-wi
           "displayCount": null,
           "hasNoneOfTheAbove": false,
           "multipleSelect": false,
-          "noneOfTheAbove": undefined,
-          "onePerLine": undefined,
           "randomize": false,
         },
         "static": false,
@@ -4977,7 +4248,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/interactive-graph-wi
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/label-image-missing-static.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -4995,14 +4265,12 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/label-image-missing-
 
 Non-renewable source can be exhausted with continuous use",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {},
     },
     {
       "content": "Wind and solar energy are renewable, while oil and coal are non-renewable fossil fuels.",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {},
     },
@@ -5017,18 +4285,15 @@ Non-renewable source can be exhausted with continuous use",
 [[☃ categorizer 1]]
 ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "categorizer 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "categories": [
             "Renewable",
             "Non-renewable",
           ],
-          "highlightLint": undefined,
           "items": [
             "Wind",
             "Oil",
@@ -5058,11 +4323,7 @@ Non-renewable source can be exhausted with continuous use",
         },
       },
       "dropdown 1": {
-        "alignment": undefined,
-        "graded": undefined,
-        "key": undefined,
         "options": {
-          "ariaLabel": undefined,
           "choices": [
             {
               "content": "",
@@ -5071,9 +4332,7 @@ Non-renewable source can be exhausted with continuous use",
           ],
           "placeholder": "",
           "static": false,
-          "visibleLabel": undefined,
         },
-        "static": undefined,
         "type": "dropdown",
         "version": {
           "major": 0,
@@ -5081,9 +4340,6 @@ Non-renewable source can be exhausted with continuous use",
         },
       },
       "label-image 1": {
-        "alignment": undefined,
-        "graded": undefined,
-        "key": undefined,
         "options": {
           "choices": [],
           "hideChoicesFromInstructions": false,
@@ -5095,7 +4351,6 @@ Non-renewable source can be exhausted with continuous use",
           "multipleAnswers": false,
           "static": false,
         },
-        "static": undefined,
         "type": "label-image",
         "version": {
           "major": 0,
@@ -5103,9 +4358,6 @@ Non-renewable source can be exhausted with continuous use",
         },
       },
       "matcher 1": {
-        "alignment": undefined,
-        "graded": undefined,
-        "key": undefined,
         "options": {
           "labels": [
             "test",
@@ -5124,7 +4376,6 @@ Non-renewable source can be exhausted with continuous use",
             "$3$",
           ],
         },
-        "static": undefined,
         "type": "matcher",
         "version": {
           "major": 0,
@@ -5132,9 +4383,6 @@ Non-renewable source can be exhausted with continuous use",
         },
       },
       "sorter 1": {
-        "alignment": undefined,
-        "graded": undefined,
-        "key": undefined,
         "options": {
           "correct": [
             "$x$",
@@ -5144,7 +4392,6 @@ Non-renewable source can be exhausted with continuous use",
           "layout": "horizontal",
           "padding": true,
         },
-        "static": undefined,
         "type": "sorter",
         "version": {
           "major": 0,
@@ -5158,23 +4405,18 @@ Non-renewable source can be exhausted with continuous use",
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/lights-puzzle.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
   "hints": [],
-  "itemDataVersion": undefined,
   "question": {
     "content": "**Light up all the squares by clicking on them.** When you click on a square, it will turn on (if it's off), or off (if it's on), as will each of the squares next to it.
 
 [[☃ lights-puzzle 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "lights-puzzle 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "gradeIncompleteAsWrong": false,
           "startCells": [
@@ -5195,9 +4437,7 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/lights-puzzle.json 1
             ],
           ],
         },
-        "static": undefined,
         "type": "deprecated-standin",
-        "version": undefined,
       },
     },
   },
@@ -5206,7 +4446,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/lights-puzzle.json 1
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/matrix-missing-version.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -5216,8 +4455,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/matrix-missing-versi
 
  $ \\textbf A^{-1} = \\frac{1}{det(\\textbf A)}adj(\\textbf A) $",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -5227,8 +4464,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/matrix-missing-versi
 
  $ \\left[\\begin{array}{rrr}\\left|\\begin{array}{rr}1 & 1 \\\\ 1 & 1\\end{array}\\right| & \\left|\\begin{array}{rr}0 & 1 \\\\ 1 & 1\\end{array}\\right| & \\left|\\begin{array}{rr}0 & 1 \\\\ 1 & 1\\end{array}\\right| \\\\ \\left|\\begin{array}{rr}0 & 1 \\\\ 1 & 1\\end{array}\\right| & \\left|\\begin{array}{rr}2 & 1 \\\\ 1 & 1\\end{array}\\right| & \\left|\\begin{array}{rr}2 & 0 \\\\ 1 & 1\\end{array}\\right| \\\\ \\left|\\begin{array}{rr}0 & 1 \\\\ 1 & 1\\end{array}\\right| & \\left|\\begin{array}{rr}2 & 1 \\\\ 0 & 1\\end{array}\\right| & \\left|\\begin{array}{rr}2 & 0 \\\\ 0 & 1\\end{array}\\right|\\end{array}\\right] = \\left[\\begin{array}{rrr}0 & -1 & -1 \\\\ -1 & 1 & 2 \\\\ -1 & 2 & 2\\end{array}\\right] $",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -5238,8 +4473,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/matrix-missing-versi
 
  $ \\left[\\begin{array}{rrr}0 & 1 & -1 \\\\ 1 & 1 & -2 \\\\ -1 & -2 & 2\\end{array}\\right] $",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -5247,8 +4480,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/matrix-missing-versi
 
  $ adj(\\textbf A) = \\left[\\begin{array}{rrr}0 & 1 & -1 \\\\ 1 & 1 & -2 \\\\ -1 & -2 & 2\\end{array}\\right]^T = \\left[\\begin{array}{rrr}\\color{\\#6495ED}{0} & \\color{\\#6495ED}{1} & \\color{\\#6495ED}{-1} \\\\ \\color{\\#6495ED}{1} & \\color{\\#6495ED}{1} & \\color{\\#6495ED}{-2} \\\\ \\color{\\#6495ED}{-1} & \\color{\\#6495ED}{-2} & \\color{\\#6495ED}{2}\\end{array}\\right] $",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -5258,8 +4489,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/matrix-missing-versi
 
   $ det(\\textbf A) = \\left|\\begin{array}{rrr}2 & 0 & 1 \\\\ 0 & 1 & 1 \\\\ 1 & 1 & 1\\end{array}\\right|= \\color{\\#DF0030}{-1} $",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -5269,19 +4498,14 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/matrix-missing-versi
 
  $ \\textbf A^{-1} = \\frac{1}{\\color{\\#DF0030}{-1}} \\left[\\begin{array}{rrr}\\color{\\#6495ED}{0} & \\color{\\#6495ED}{1} & \\color{\\#6495ED}{-1} \\\\ \\color{\\#6495ED}{1} & \\color{\\#6495ED}{1} & \\color{\\#6495ED}{-2} \\\\ \\color{\\#6495ED}{-1} & \\color{\\#6495ED}{-2} & \\color{\\#6495ED}{2}\\end{array}\\right] $",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "$ = \\left[\\begin{array}{rrr}0 & -1 & 1 \\\\ -1 & -1 & 2 \\\\ 1 & 2 & -2\\end{array}\\right]$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
-  "itemDataVersion": undefined,
   "question": {
     "content": "$\\textbf A = \\left[\\begin{array}{rrr}2 & 0 & 1 \\\\ 0 & 1 & 1 \\\\ 1 & 1 & 1\\end{array}\\right]$
 
@@ -5289,12 +4513,8 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/matrix-missing-versi
 
 [[☃ matrix 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "matrix 1": {
-        "alignment": undefined,
-        "graded": undefined,
-        "key": undefined,
         "options": {
           "answers": [
             [
@@ -5313,18 +4533,12 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/matrix-missing-versi
               -2,
             ],
           ],
-          "cursorPosition": undefined,
           "matrixBoardSize": [
             3,
             3,
           ],
-          "prefix": undefined,
-          "static": undefined,
-          "suffix": undefined,
         },
-        "static": undefined,
         "type": "matrix",
-        "version": undefined,
       },
     },
   },
@@ -5333,7 +4547,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/matrix-missing-versi
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/matrix-with-nulls-in-answer.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -5351,12 +4564,10 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/matrix-with-nulls-in
 
 [[☃ matrix 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "matrix 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "answers": [
             [
@@ -5401,7 +4612,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/matrix-with-nulls-in
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/matrix-with-string-answer-element.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": true,
     "chi2Table": false,
@@ -5422,13 +4632,11 @@ $x_1\\cdot\\vec{v_1}+x_2\\cdot\\vec{v_2}+...+x_n\\cdot\\vec{v_n}$
 
 [[☃ explanation 1]]",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {
         "explanation 1": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "explanation": "We learned that for 2-dimensional matrices, the first column is the image of the unit vector $\\left[\\begin{array}{c}1\\\\\\\\0\\end{array}\\right]$ and the second column is the image of the unit vector $\\left[\\begin{array}{c}0\\\\\\\\1\\end{array}\\right]$.
 
@@ -5559,7 +4767,6 @@ $x_1\\cdot\\left[\\begin{array}{c}1\\\\\\\\0\\\\\\\\0\\\\\\\\0\\end{array}\\righ
 \\end{array}\\right]
 \\end{align}$",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {},
     },
@@ -5592,7 +4799,6 @@ $\\left[\\begin{array}{c}
 -5
 \\end{array}\\right]$",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {},
     },
@@ -5626,12 +4832,10 @@ $\\left[\\begin{array}{c}
 
 [[☃ matrix 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "matrix 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "answers": [
             [
@@ -5673,7 +4877,6 @@ $\\left[\\begin{array}{c}
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/measurer-missing-image.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -5681,37 +4884,26 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/measurer-missing-ima
     {
       "content": "crwdns2931741:0crwdne2931741:0",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "crwdns2931695:0crwdne2931695:0",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "crwdns2931679:0crwdne2931679:0",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
-  "itemDataVersion": undefined,
   "question": {
     "content": "crwdns3125767:0crwdne3125767:0",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "dropdown 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
-          "ariaLabel": undefined,
           "choices": [
             {
               "content": "crwdns2301760:0crwdne2301760:0",
@@ -5744,16 +4936,11 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/measurer-missing-ima
           ],
           "placeholder": "",
           "static": false,
-          "visibleLabel": undefined,
         },
-        "static": undefined,
         "type": "dropdown",
-        "version": undefined,
       },
       "measurer 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "box": [
             480,
@@ -5775,9 +4962,7 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/measurer-missing-ima
           "showRuler": false,
           "static": false,
         },
-        "static": undefined,
         "type": "measurer",
-        "version": undefined,
       },
     },
   },
@@ -5786,7 +4971,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/measurer-missing-ima
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/measurer-missing-static.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -5800,26 +4984,15 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/measurer-missing-sta
 
 ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "measurer 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "box": [
             480,
             480,
           ],
-          "image": {
-            "bottom": undefined,
-            "height": undefined,
-            "left": undefined,
-            "scale": undefined,
-            "top": undefined,
-            "url": undefined,
-            "width": undefined,
-          },
+          "image": {},
           "rulerLabel": "",
           "rulerLength": 10,
           "rulerPixels": 40,
@@ -5828,7 +5001,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/measurer-missing-sta
           "showRuler": true,
           "static": false,
         },
-        "static": undefined,
         "type": "measurer",
         "version": {
           "major": 1,
@@ -5842,7 +5014,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/measurer-missing-sta
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/number-line-missing-snapDivisions.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -5869,7 +5040,6 @@ This amount must be *greater than or equal to* $\\purpleC{13.50}$, so the inequa
 
 $\\blueD{3}+\\greenD{1.2c}\\maroonD{\\geq}\\purpleC{13.50}$",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {},
     },
@@ -5888,7 +5058,6 @@ c &≥ 8.75
 
 Janie must do $8.75$ or more chores to have enough money to purchase the CD.",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {},
     },
@@ -5899,7 +5068,6 @@ The solution  includes the point $c=8.75$, so we *fill in* the circle at $8.75$.
 
 Because the solution to the inequality says that $c\\geq 8.75$, this means that solutions are numbers to the *right* of $8.75$.",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {},
     },
@@ -5917,13 +5085,11 @@ The graph of the solution of the inequality, $c ≥ 8.75$, looks like this:
           "width": 460,
         },
       },
-      "metadata": undefined,
       "replace": false,
       "widgets": {
         "number-line 3": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "correctRel": "ge",
             "correctX": 8.75,
@@ -5945,7 +5111,6 @@ The graph of the solution of the inequality, $c ≥ 8.75$, looks like this:
               5,
               10,
             ],
-            "showTooltip": undefined,
             "showTooltips": false,
             "snapDivisions": 2,
             "static": false,
@@ -5993,12 +5158,10 @@ The graph of the solution of the inequality, $c ≥ 8.75$, looks like this:
         "width": 460,
       },
     },
-    "metadata": undefined,
     "widgets": {
       "expression 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "answerForms": [
             {
@@ -6009,20 +5172,17 @@ The graph of the solution of the inequality, $c ≥ 8.75$, looks like this:
               "value": "1.2c+3\\ge13.5",
             },
           ],
-          "ariaLabel": undefined,
           "buttonSets": [
             "basic",
             "basic relations",
             "advanced relations",
           ],
-          "buttonsVisible": undefined,
           "functions": [
             "f",
             "g",
             "h",
           ],
           "times": false,
-          "visibleLabel": undefined,
         },
         "static": false,
         "type": "expression",
@@ -6034,7 +5194,6 @@ The graph of the solution of the inequality, $c ≥ 8.75$, looks like this:
       "number-line 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "correctRel": "ge",
           "correctX": 8.75,
@@ -6056,7 +5215,6 @@ The graph of the solution of the inequality, $c ≥ 8.75$, looks like this:
             5,
             10,
           ],
-          "showTooltip": undefined,
           "showTooltips": false,
           "snapDivisions": 2,
           "static": false,
@@ -6076,7 +5234,6 @@ The graph of the solution of the inequality, $c ≥ 8.75$, looks like this:
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/number-line-missing-static.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -6090,12 +5247,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/number-line-missing-
 
 ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "number-line 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "correctRel": "eq",
           "correctX": 0.5,
@@ -6117,12 +5271,10 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/number-line-missing-
             0,
             1,
           ],
-          "showTooltip": undefined,
           "snapDivisions": 1,
           "static": false,
           "tickStep": null,
         },
-        "static": undefined,
         "type": "number-line",
         "version": {
           "major": 0,
@@ -6136,7 +5288,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/number-line-missing-
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/number-line-with-empty-strings-in-label-range.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -6154,15 +5305,11 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/number-line-with-emp
           "width": 460,
         },
       },
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "On the number line, numbers to the left are less than numbers to the right.",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
@@ -6175,8 +5322,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/number-line-with-emp
           "width": 460,
         },
       },
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
@@ -6192,12 +5337,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/number-line-with-emp
 
 ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "number-line 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "correctRel": "eq",
           "correctX": -0.375,
@@ -6218,12 +5360,10 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/number-line-with-emp
             -1,
             1,
           ],
-          "showTooltip": undefined,
           "snapDivisions": 2,
           "static": false,
           "tickStep": null,
         },
-        "static": undefined,
         "type": "number-line",
         "version": {
           "major": 0,
@@ -6231,43 +5371,29 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/number-line-with-emp
         },
       },
       "radio 2": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "choices": [
             {
-              "clue": undefined,
               "content": " $\\,-1\\,\\,\\,<\\,-10$",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": " $-10\\,\\,\\,<\\,\\,\\,1$",
               "correct": true,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "  $\\,\\,\\,\\,\\,10\\,\\,\\,< \\,-1$",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
           ],
-          "countChoices": undefined,
           "deselectEnabled": false,
           "displayCount": null,
-          "hasNoneOfTheAbove": undefined,
           "multipleSelect": true,
           "noneOfTheAbove": false,
           "onePerLine": true,
           "randomize": true,
         },
-        "static": undefined,
         "type": "radio",
         "version": {
           "major": 0,
@@ -6281,7 +5407,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/number-line-with-emp
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/number-line-with-null-correctX.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -6292,22 +5417,16 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/number-line-with-nul
 
 $=(31-31) -8$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "$ =0-8$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "$=-8$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
@@ -6320,12 +5439,9 @@ $=(31-31) -8$",
 
  [[☃ numeric-input 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "number-line 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "correctRel": "eq",
           "correctX": null,
@@ -6334,7 +5450,6 @@ $=(31-31) -8$",
             12,
           ],
           "initialX": null,
-          "isTickCtrl": undefined,
           "labelRange": [
             null,
             null,
@@ -6346,12 +5461,10 @@ $=(31-31) -8$",
             0,
             10,
           ],
-          "showTooltip": undefined,
           "snapDivisions": 2,
           "static": false,
           "tickStep": null,
         },
-        "static": undefined,
         "type": "number-line",
         "version": {
           "major": 0,
@@ -6359,14 +5472,10 @@ $=(31-31) -8$",
         },
       },
       "numeric-input 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
-          "answerForms": undefined,
           "answers": [
             {
-              "answerForms": undefined,
               "maxError": null,
               "message": "",
               "simplify": "required",
@@ -6376,12 +5485,9 @@ $=(31-31) -8$",
             },
           ],
           "coefficient": false,
-          "labelText": undefined,
-          "rightAlign": undefined,
           "size": "normal",
           "static": false,
         },
-        "static": undefined,
         "type": "numeric-input",
         "version": {
           "major": 0,
@@ -6395,7 +5501,6 @@ $=(31-31) -8$",
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-answer-with-null-value.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -6409,14 +5514,10 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-answer
 
 [[☃ numeric-input 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "numeric-input 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
-          "answerForms": undefined,
           "answers": [
             {
               "answerForms": [],
@@ -6429,12 +5530,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-answer
             },
           ],
           "coefficient": false,
-          "labelText": undefined,
-          "rightAlign": undefined,
           "size": "normal",
           "static": false,
         },
-        "static": undefined,
         "type": "numeric-input",
         "version": {
           "major": 0,
@@ -6448,7 +5546,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-answer
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-answer-with-simplify-true.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -6456,15 +5553,11 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-answer
     {
       "content": "$= \\dfrac{9 \\times 1}{2 \\times 4}$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "$= \\dfrac{9}{8}$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
@@ -6477,17 +5570,13 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-answer
 
 [[☃ numeric-input 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "numeric-input 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
-          "answerForms": undefined,
           "answers": [
             {
-              "answerForms": undefined,
               "maxError": 0,
               "message": "",
               "simplify": "true",
@@ -6498,11 +5587,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-answer
           ],
           "coefficient": false,
           "labelText": "",
-          "rightAlign": undefined,
           "size": "normal",
           "static": false,
         },
-        "static": undefined,
         "type": "numeric-input",
         "version": {
           "major": 0,
@@ -6516,7 +5603,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-answer
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-answer-without-value.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -6534,7 +5620,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-answer
 
 Let's perform this multiplication to find the answer.",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {},
     },
@@ -6543,7 +5628,6 @@ Let's perform this multiplication to find the answer.",
 
 $\\dfrac{2}{3}\\times \\dfrac{2}{3}\\times\\dfrac{2}{3}=\\boxed{\\dfrac{8}{27}}$.",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {},
     },
@@ -6555,12 +5639,10 @@ $\\dfrac{2}{3}\\times \\dfrac{2}{3}\\times\\dfrac{2}{3}=\\boxed{\\dfrac{8}{27}}$
   "question": {
     "content": "$\\bigg(\\dfrac{2}{3} \\bigg)^3 =$ [[☃ expression 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "expression 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "answerForms": [
             {
@@ -6587,11 +5669,9 @@ $\\dfrac{2}{3}\\times \\dfrac{2}{3}\\times\\dfrac{2}{3}=\\boxed{\\dfrac{8}{27}}$
               "value": "\\frac{8}{27}",
             },
           ],
-          "ariaLabel": undefined,
           "buttonSets": [
             "basic",
           ],
-          "buttonsVisible": undefined,
           "functions": [
             "f",
             "g",
@@ -6599,7 +5679,6 @@ $\\dfrac{2}{3}\\times \\dfrac{2}{3}\\times\\dfrac{2}{3}=\\boxed{\\dfrac{8}{27}}$
           ],
           "static": false,
           "times": false,
-          "visibleLabel": undefined,
         },
         "static": false,
         "type": "expression",
@@ -6611,9 +5690,7 @@ $\\dfrac{2}{3}\\times \\dfrac{2}{3}\\times\\dfrac{2}{3}=\\boxed{\\dfrac{8}{27}}$
       "numeric-input 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
-          "answerForms": undefined,
           "answers": [
             {
               "answerForms": [
@@ -6625,7 +5702,6 @@ $\\dfrac{2}{3}\\times \\dfrac{2}{3}\\times\\dfrac{2}{3}=\\boxed{\\dfrac{8}{27}}$
               "simplify": "required",
               "status": "correct",
               "strict": false,
-              "value": undefined,
             },
           ],
           "coefficient": false,
@@ -6649,7 +5725,6 @@ $\\dfrac{2}{3}\\times \\dfrac{2}{3}\\times\\dfrac{2}{3}=\\boxed{\\dfrac{8}{27}}$
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-missing-coefficient.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -6667,14 +5742,10 @@ What is the radius of the mattress when it is rolled up into a cylinder.
 
 [[☃ numeric-input 1]] ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "numeric-input 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
-          "answerForms": undefined,
           "answers": [
             {
               "answerForms": [],
@@ -6687,12 +5758,9 @@ What is the radius of the mattress when it is rolled up into a cylinder.
             },
           ],
           "coefficient": false,
-          "labelText": undefined,
-          "rightAlign": undefined,
           "size": "normal",
           "static": false,
         },
-        "static": undefined,
         "type": "numeric-input",
         "version": {
           "major": 0,
@@ -6706,7 +5774,6 @@ What is the radius of the mattress when it is rolled up into a cylinder.
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-missing-labelText.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -6714,13 +5781,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-missin
     {
       "content": "Heart rate is measured in beats per minute: $\\dfrac{beats}{minutes}$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {
         "expression 1": {
-          "alignment": undefined,
           "graded": true,
-          "key": undefined,
           "options": {
             "answerForms": [
               {
@@ -6743,7 +5806,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-missin
             "times": false,
             "visibleLabel": undefined,
           },
-          "static": undefined,
           "type": "expression",
           "version": {
             "major": 1,
@@ -6751,20 +5813,15 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-missin
           },
         },
         "input-number 1": {
-          "alignment": undefined,
           "graded": true,
-          "key": undefined,
           "options": {
             "answerType": "number",
-            "customKeypad": undefined,
             "inexact": false,
             "maxError": 0.1,
-            "rightAlign": undefined,
             "simplify": "required",
             "size": "normal",
             "value": 0,
           },
-          "static": undefined,
           "type": "input-number",
           "version": {
             "major": 0,
@@ -6772,9 +5829,7 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-missin
           },
         },
         "passage 1": {
-          "alignment": undefined,
           "graded": true,
-          "key": undefined,
           "options": {
             "footnotes": "",
             "passageText": "",
@@ -6782,7 +5837,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-missin
             "showLineNumbers": true,
             "static": false,
           },
-          "static": undefined,
           "type": "passage",
           "version": {
             "major": 0,
@@ -6796,13 +5850,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-missin
 
 ",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {
         "expression 1": {
-          "alignment": undefined,
           "graded": true,
-          "key": undefined,
           "options": {
             "answerForms": [
               {
@@ -6825,7 +5875,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-missin
             "times": false,
             "visibleLabel": undefined,
           },
-          "static": undefined,
           "type": "expression",
           "version": {
             "major": 1,
@@ -6833,17 +5882,10 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-missin
           },
         },
         "image 1": {
-          "alignment": undefined,
           "graded": true,
-          "key": undefined,
           "options": {
-            "alt": undefined,
             "backgroundImage": {
-              "bottom": undefined,
               "height": 0,
-              "left": undefined,
-              "scale": undefined,
-              "top": undefined,
               "url": null,
               "width": 0,
             },
@@ -6863,10 +5905,8 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-missin
                 10,
               ],
             ],
-            "static": undefined,
             "title": "",
           },
-          "static": undefined,
           "type": "image",
           "version": {
             "major": 0,
@@ -6885,36 +5925,26 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-missin
           "width": 342,
         },
       },
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "From the previous calculation, we get 96 beats per minute as  Lance's active heart rate.",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "To find the difference between the active and resting heart rate, subtract the resting heart rate from the active heart rate. The next hint shows this.",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "$96$ $bpm$ $-$ $32$ $bpm$ $=$ $64$ $bpm$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "The difference between Lance Armstrong's  active and resting heart rate is $64$ $bpm$. ",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
@@ -6940,12 +5970,9 @@ Heart rate is described as the number of heart beats per minute.  The normal hum
         "width": 478,
       },
     },
-    "metadata": undefined,
     "widgets": {
       "expression 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "answerForms": [
             {
@@ -6968,7 +5995,6 @@ Heart rate is described as the number of heart beats per minute.  The normal hum
           "times": false,
           "visibleLabel": undefined,
         },
-        "static": undefined,
         "type": "expression",
         "version": {
           "major": 1,
@@ -6976,14 +6002,10 @@ Heart rate is described as the number of heart beats per minute.  The normal hum
         },
       },
       "numeric-input 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
-          "answerForms": undefined,
           "answers": [
             {
-              "answerForms": undefined,
               "maxError": null,
               "message": "",
               "simplify": "required",
@@ -6993,12 +6015,9 @@ Heart rate is described as the number of heart beats per minute.  The normal hum
             },
           ],
           "coefficient": false,
-          "labelText": undefined,
-          "rightAlign": undefined,
           "size": "normal",
           "static": false,
         },
-        "static": undefined,
         "type": "numeric-input",
         "version": {
           "major": 0,
@@ -7006,9 +6025,7 @@ Heart rate is described as the number of heart beats per minute.  The normal hum
         },
       },
       "sequence 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "json": [
             {
@@ -7018,7 +6035,6 @@ Heart rate is described as the number of heart beats per minute.  The normal hum
             },
           ],
         },
-        "static": undefined,
         "type": "deprecated-standin",
         "version": {
           "major": 0,
@@ -7032,7 +6048,6 @@ Heart rate is described as the number of heart beats per minute.  The normal hum
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-with-simplify-false.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -7058,17 +6073,13 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-with-s
         "width": 285,
       },
     },
-    "metadata": undefined,
     "widgets": {
       "numeric-input 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
-          "answerForms": undefined,
           "answers": [
             {
-              "answerForms": undefined,
               "maxError": 0,
               "message": "",
               "simplify": "false",
@@ -7098,7 +6109,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/numeric-input-with-s
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/orderer-option-missing-images.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -7115,13 +6125,11 @@ To **decompose** a number, we break it into smaller parts.
 
 A **unit fraction** is a fraction with a numerator of $1$. [[☃ explanation 2]]",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {
         "explanation 1": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "explanation": "We can decompose $54$ into $50+4$.",
             "hidePrompt": "Okay, got it",
@@ -7139,7 +6147,6 @@ A **unit fraction** is a fraction with a numerator of $1$. [[☃ explanation 2]]
         "explanation 2": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "explanation": "$\\dfrac15$ is a unit fraction because the numerator (top number) is $1$.",
             "hidePrompt": "Okay, got it",
@@ -7175,13 +6182,11 @@ Let's decompose $\\dfrac59$ into unit fractions.
           "width": 400,
         },
       },
-      "metadata": undefined,
       "replace": false,
       "widgets": {
         "explanation 1": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "explanation": "
 
@@ -7203,76 +6208,61 @@ $\\dfrac59$ can be broken up into $\\dfrac19+\\dfrac19+\\dfrac19+\\dfrac19+\\dfr
         "graded-group 1": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "content": "**Drag the cards to create an expression that is equivalent to $\\dfrac59$.**
 
 [[☃ orderer 1]]",
-            "hasHint": undefined,
-            "hint": undefined,
             "images": {},
-            "immutableWidgets": undefined,
             "title": "",
-            "widgetEnabled": undefined,
             "widgets": {
               "orderer 1": {
                 "alignment": "default",
                 "graded": true,
-                "key": undefined,
                 "options": {
                   "correctOptions": [
                     {
                       "content": "$\\dfrac19$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$+$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$\\dfrac19$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$+$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$\\dfrac19$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$+$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$\\dfrac19$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$+$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$\\dfrac19$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                   ],
@@ -7282,13 +6272,11 @@ $\\dfrac59$ can be broken up into $\\dfrac19+\\dfrac19+\\dfrac19+\\dfrac19+\\dfr
                     {
                       "content": "$\\dfrac19$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$+$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                   ],
@@ -7332,13 +6320,11 @@ How can we decompose $\\dfrac38$?
           "width": 96,
         },
       },
-      "metadata": undefined,
       "replace": false,
       "widgets": {
         "explanation 1": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "explanation": "$\\dfrac18+\\dfrac18+\\dfrac18$
 
@@ -7358,7 +6344,6 @@ How can we decompose $\\dfrac38$?
         "graded-group 1": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "content": "**Write an expression decomposing $\\dfrac38$ into unit fractions.**
 
@@ -7367,17 +6352,12 @@ How can we decompose $\\dfrac38$?
 [[☃ expression 1]]
 
 ",
-            "hasHint": undefined,
-            "hint": undefined,
             "images": {},
-            "immutableWidgets": undefined,
             "title": "",
-            "widgetEnabled": undefined,
             "widgets": {
               "expression 1": {
                 "alignment": "default",
                 "graded": true,
-                "key": undefined,
                 "options": {
                   "answerForms": [
                     {
@@ -7388,18 +6368,15 @@ How can we decompose $\\dfrac38$?
                       "value": "\\frac{1}{8}+\\frac{1}{8}+\\frac{1}{8}",
                     },
                   ],
-                  "ariaLabel": undefined,
                   "buttonSets": [
                     "basic",
                   ],
-                  "buttonsVisible": undefined,
                   "functions": [
                     "f",
                     "g",
                     "h",
                   ],
                   "times": true,
-                  "visibleLabel": undefined,
                 },
                 "static": false,
                 "type": "expression",
@@ -7435,13 +6412,11 @@ How can we decompose $\\dfrac64$?
           "width": 410,
         },
       },
-      "metadata": undefined,
       "replace": false,
       "widgets": {
         "explanation 1": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "explanation": "$\\dfrac14+\\dfrac14+\\dfrac14+\\dfrac14+\\dfrac14+\\dfrac14$",
             "hidePrompt": "Hide solution",
@@ -7459,90 +6434,73 @@ How can we decompose $\\dfrac64$?
         "graded-group 1": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "content": "**Drag the cards to create an expression that is equivalent to $\\dfrac64$.**
 
 [[☃ orderer 1]]
 
 ",
-            "hasHint": undefined,
-            "hint": undefined,
             "images": {},
-            "immutableWidgets": undefined,
             "title": "",
-            "widgetEnabled": undefined,
             "widgets": {
               "orderer 1": {
                 "alignment": "default",
                 "graded": true,
-                "key": undefined,
                 "options": {
                   "correctOptions": [
                     {
                       "content": "$\\dfrac14$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$+$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$\\dfrac14$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$+$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$\\dfrac14$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$+$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$\\dfrac14$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$+$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$\\dfrac14$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$+$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$\\dfrac14$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                   ],
@@ -7552,13 +6510,11 @@ How can we decompose $\\dfrac64$?
                     {
                       "content": "$\\dfrac14$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                     {
                       "content": "$+$",
                       "images": {},
-                      "metadata": undefined,
                       "widgets": {},
                     },
                   ],
@@ -7613,13 +6569,11 @@ How can we decompose $\\dfrac64$?
 
 [[☃ explanation 4]]",
       "images": {},
-      "metadata": undefined,
       "replace": false,
       "widgets": {
         "explanation 1": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "explanation": "$\\dfrac29=\\dfrac19+\\dfrac19$",
             "hidePrompt": "Hide solution",
@@ -7637,7 +6591,6 @@ How can we decompose $\\dfrac64$?
         "explanation 2": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "explanation": "$\\dfrac13+\\dfrac13+\\dfrac13+\\dfrac13+\\dfrac13$",
             "hidePrompt": "Hide solution",
@@ -7655,7 +6608,6 @@ How can we decompose $\\dfrac64$?
         "explanation 3": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "explanation": "$\\dfrac16+\\dfrac16+\\dfrac16+\\dfrac16+\\dfrac16=\\dfrac56$
 ",
@@ -7674,7 +6626,6 @@ How can we decompose $\\dfrac64$?
         "explanation 4": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "explanation": "
 
@@ -7698,54 +6649,38 @@ $\\dfrac23$ | $\\dfrac13+\\dfrac13$",
         "graded-group 1": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "content": "**Which shows $\\dfrac29$ decomposed into unit fractions?**
 
 [[☃ radio 1]]
 
 ",
-            "hasHint": undefined,
-            "hint": undefined,
             "images": {},
-            "immutableWidgets": undefined,
             "title": "",
-            "widgetEnabled": undefined,
             "widgets": {
               "radio 1": {
                 "alignment": "default",
                 "graded": true,
-                "key": undefined,
                 "options": {
                   "choices": [
                     {
-                      "clue": undefined,
                       "content": "$\\dfrac19+\\dfrac19$",
                       "correct": true,
-                      "isNoneOfTheAbove": undefined,
-                      "widgets": undefined,
                     },
                     {
-                      "clue": undefined,
                       "content": "$\\dfrac12+\\dfrac12+\\dfrac12+\\dfrac12+\\dfrac12+\\dfrac12+\\dfrac12+\\dfrac12+\\dfrac12$",
                       "correct": false,
-                      "isNoneOfTheAbove": undefined,
-                      "widgets": undefined,
                     },
                     {
-                      "clue": undefined,
                       "content": "$\\dfrac19+\\dfrac29$",
                       "correct": false,
                       "isNoneOfTheAbove": false,
-                      "widgets": undefined,
                     },
                   ],
-                  "countChoices": undefined,
                   "deselectEnabled": false,
                   "displayCount": null,
                   "hasNoneOfTheAbove": false,
                   "multipleSelect": false,
-                  "noneOfTheAbove": undefined,
                   "onePerLine": true,
                   "randomize": false,
                 },
@@ -7768,7 +6703,6 @@ $\\dfrac23$ | $\\dfrac13+\\dfrac13$",
         "graded-group 2": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "content": "**Write an expression showing $\\dfrac53$ decomposed into unit fractions.**
 
@@ -7777,17 +6711,12 @@ $\\dfrac23$ | $\\dfrac13+\\dfrac13$",
 
 
 ",
-            "hasHint": undefined,
-            "hint": undefined,
             "images": {},
-            "immutableWidgets": undefined,
             "title": "",
-            "widgetEnabled": undefined,
             "widgets": {
               "expression 1": {
                 "alignment": "default",
                 "graded": true,
-                "key": undefined,
                 "options": {
                   "answerForms": [
                     {
@@ -7798,18 +6727,15 @@ $\\dfrac23$ | $\\dfrac13+\\dfrac13$",
                       "value": "\\frac{1}{3}+\\frac{1}{3}+\\frac{1}{3}+\\frac{1}{3}+\\frac{1}{3}",
                     },
                   ],
-                  "ariaLabel": undefined,
                   "buttonSets": [
                     "basic",
                   ],
-                  "buttonsVisible": undefined,
                   "functions": [
                     "f",
                     "g",
                     "h",
                   ],
                   "times": false,
-                  "visibleLabel": undefined,
                 },
                 "static": false,
                 "type": "expression",
@@ -7830,7 +6756,6 @@ $\\dfrac23$ | $\\dfrac13+\\dfrac13$",
         "graded-group 3": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "content": "**What fraction is equal to $\\dfrac16+\\dfrac16+\\dfrac16+\\dfrac16+\\dfrac16$?**
 
@@ -7839,19 +6764,13 @@ $\\dfrac23$ | $\\dfrac13+\\dfrac13$",
 
 
 ",
-            "hasHint": undefined,
-            "hint": undefined,
             "images": {},
-            "immutableWidgets": undefined,
             "title": "",
-            "widgetEnabled": undefined,
             "widgets": {
               "numeric-input 1": {
                 "alignment": "default",
                 "graded": true,
-                "key": undefined,
                 "options": {
-                  "answerForms": undefined,
                   "answers": [
                     {
                       "answerForms": [
@@ -7868,7 +6787,6 @@ $\\dfrac23$ | $\\dfrac13+\\dfrac13$",
                   ],
                   "coefficient": false,
                   "labelText": "",
-                  "rightAlign": undefined,
                   "size": "normal",
                   "static": false,
                 },
@@ -7891,7 +6809,6 @@ $\\dfrac23$ | $\\dfrac13+\\dfrac13$",
         "graded-group 4": {
           "alignment": "default",
           "graded": true,
-          "key": undefined,
           "options": {
             "content": "**Match each fraction to its equivalent expression.**
 
@@ -7900,17 +6817,12 @@ $\\dfrac23$ | $\\dfrac13+\\dfrac13$",
 
 
 ",
-            "hasHint": undefined,
-            "hint": undefined,
             "images": {},
-            "immutableWidgets": undefined,
             "title": "",
-            "widgetEnabled": undefined,
             "widgets": {
               "matcher 1": {
                 "alignment": "default",
                 "graded": true,
-                "key": undefined,
                 "options": {
                   "labels": [
                     "Fraction",
@@ -7955,7 +6867,6 @@ $\\dfrac23$ | $\\dfrac13+\\dfrac13$",
   "question": {
     "content": "",
     "images": {},
-    "metadata": undefined,
     "widgets": {},
   },
 }
@@ -7963,7 +6874,6 @@ $\\dfrac23$ | $\\dfrac13+\\dfrac13$",
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/orderer-option-missing-widgets.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -7972,19 +6882,14 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/orderer-option-missi
       "content": "Extinction is a natural process, and the rate of extinction can be determined by studying changes in biodiversity during the history of life on Earth.
 ",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {
         "orderer 1": {
-          "alignment": undefined,
           "graded": true,
-          "key": undefined,
           "options": {
             "correctOptions": [
               {
                 "content": "$x$",
                 "images": {},
-                "metadata": undefined,
                 "widgets": {},
               },
             ],
@@ -7994,13 +6899,11 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/orderer-option-missi
               {
                 "content": "$x$",
                 "images": {},
-                "metadata": undefined,
                 "widgets": {},
               },
               {
                 "content": "$y$",
                 "images": {},
-                "metadata": undefined,
                 "widgets": {},
               },
             ],
@@ -8008,12 +6911,10 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/orderer-option-missi
               {
                 "content": "$y$",
                 "images": {},
-                "metadata": undefined,
                 "widgets": {},
               },
             ],
           },
-          "static": undefined,
           "type": "orderer",
           "version": {
             "major": 0,
@@ -8025,8 +6926,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/orderer-option-missi
     {
       "content": "Humans are causing a current sixth mass extinction event, but are not the only reason species go extinct.",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
@@ -8046,53 +6945,35 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/orderer-option-missi
         "width": 396,
       },
     },
-    "metadata": undefined,
     "widgets": {
       "radio 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "choices": [
             {
-              "clue": undefined,
               "content": "a.	the rate of extinction that balances the rate of speciation",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "b.	the average rate at which extinctions have occurred naturally in the geologic past, without human involvement",
               "correct": true,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "c.	the rate of extinction that is currently occurring in protected areas like national parks and marine sanctuaries",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "d.	the rate of extinction that can be determined by using Geiger counters and detecting radiation",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
           ],
-          "countChoices": undefined,
           "deselectEnabled": false,
           "displayCount": null,
-          "hasNoneOfTheAbove": undefined,
           "multipleSelect": false,
           "noneOfTheAbove": false,
           "onePerLine": true,
           "randomize": false,
         },
-        "static": undefined,
         "type": "radio",
         "version": {
           "major": 0,
@@ -8106,7 +6987,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/orderer-option-missi
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/orderer-with-invalid-height.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -8114,12 +6994,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/orderer-with-invalid
     {
       "content": "The doric is the oldest and simplest order, the Corinthian is the latest and most complex.",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
-  "itemDataVersion": undefined,
   "question": {
     "content": "Here is a doric, ionic and corinthian capital. Put these  in the chronological order of their development. [[☃ orderer 1]]
 
@@ -8132,30 +7009,23 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/orderer-with-invalid
 
 ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "orderer 1": {
-        "alignment": undefined,
-        "graded": undefined,
-        "key": undefined,
         "options": {
           "correctOptions": [
             {
               "content": "![](https://ka-perseus-images.s3.amazonaws.com/a9387c1491bb743a0c76d2ab74c4dd145c964c7b.jpeg)",
               "images": {},
-              "metadata": undefined,
               "widgets": {},
             },
             {
               "content": "![](https://ka-perseus-images.s3.amazonaws.com/45ff66c9387dcb419651883677cfb11fbbf8e075.jpeg)",
               "images": {},
-              "metadata": undefined,
               "widgets": {},
             },
             {
               "content": "![](https://ka-perseus-images.s3.amazonaws.com/54ea9b0cf1a57bf2879772ea81f656264605d75e.jpeg)",
               "images": {},
-              "metadata": undefined,
               "widgets": {},
             },
           ],
@@ -8165,27 +7035,22 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/orderer-with-invalid
             {
               "content": "![](https://ka-perseus-images.s3.amazonaws.com/45ff66c9387dcb419651883677cfb11fbbf8e075.jpeg)",
               "images": {},
-              "metadata": undefined,
               "widgets": {},
             },
             {
               "content": "![](https://ka-perseus-images.s3.amazonaws.com/54ea9b0cf1a57bf2879772ea81f656264605d75e.jpeg)",
               "images": {},
-              "metadata": undefined,
               "widgets": {},
             },
             {
               "content": "![](https://ka-perseus-images.s3.amazonaws.com/a9387c1491bb743a0c76d2ab74c4dd145c964c7b.jpeg)",
               "images": {},
-              "metadata": undefined,
               "widgets": {},
             },
           ],
           "otherOptions": [],
         },
-        "static": undefined,
         "type": "orderer",
-        "version": undefined,
       },
     },
   },
@@ -8194,7 +7059,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/orderer-with-invalid
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/orderer-with-undefined-options.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -8225,20 +7089,14 @@ A free body diagram of the **box** is shown below.
         "width": 400,
       },
     },
-    "metadata": undefined,
     "widgets": {
       "image 1": {
         "alignment": "block",
         "graded": true,
-        "key": undefined,
         "options": {
           "alt": "A woman places a box on a shelf and pushes it to the left, sliding it further onto the shelf.",
           "backgroundImage": {
-            "bottom": undefined,
             "height": 263,
-            "left": undefined,
-            "scale": undefined,
-            "top": undefined,
             "url": "https://cdn.kastatic.org/ka-content-images/89e2cabd1261ec9119c501bd6c9c0f541e09ab2f.png",
             "width": 400,
           },
@@ -8271,15 +7129,10 @@ A free body diagram of the **box** is shown below.
       "image 2": {
         "alignment": "block",
         "graded": true,
-        "key": undefined,
         "options": {
           "alt": "A model shows a square with four arrows pointing out of it. An arrow points down and is labelled F g. Another arrow points up and is labelled F N. Another arrow points left and is labelled F a. Another arrow points right and is labelled F f.",
           "backgroundImage": {
-            "bottom": undefined,
             "height": 306,
-            "left": undefined,
-            "scale": undefined,
-            "top": undefined,
             "url": "https://cdn.kastatic.org/ka-content-images/48c2597aa0e5a7ac27771cfc2e7c955c7cb14881.svg",
             "width": 300,
           },
@@ -8310,15 +7163,11 @@ A free body diagram of the **box** is shown below.
         },
       },
       "orderer 1": {
-        "alignment": undefined,
-        "graded": undefined,
-        "key": undefined,
         "options": {
           "correctOptions": [
             {
               "content": "$x$",
               "images": {},
-              "metadata": undefined,
               "widgets": {},
             },
           ],
@@ -8329,12 +7178,10 @@ A free body diagram of the **box** is shown below.
             {
               "content": "$y$",
               "images": {},
-              "metadata": undefined,
               "widgets": {},
             },
           ],
         },
-        "static": undefined,
         "type": "orderer",
         "version": {
           "major": 0,
@@ -8344,36 +7191,29 @@ A free body diagram of the **box** is shown below.
       "radio 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "choices": [
             {
               "clue": "$F_\\text{N}$ results from the box interacting with the shelf.",
               "content": "normal force $(F_\\text{N})$",
               "correct": true,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
               "clue": "$F_\\text{g}$ results from the box interacting with Earth.",
               "content": "gravitational force $(F_\\text{g})$",
               "correct": true,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
               "clue": "$F_\\text{a}$ results from the box interacting with the woman's hand.",
               "content": "applied force $(F_\\text{a})$",
               "correct": true,
               "isNoneOfTheAbove": false,
-              "widgets": undefined,
             },
             {
               "clue": "$F_\\text{f}$ results from the box interacting with the shelf.",
               "content": "frictional force $(F_\\text{f})$",
               "correct": true,
               "isNoneOfTheAbove": false,
-              "widgets": undefined,
             },
           ],
           "countChoices": false,
@@ -8381,8 +7221,6 @@ A free body diagram of the **box** is shown below.
           "displayCount": null,
           "hasNoneOfTheAbove": false,
           "multipleSelect": true,
-          "noneOfTheAbove": undefined,
-          "onePerLine": undefined,
           "randomize": true,
         },
         "static": false,
@@ -8395,7 +7233,6 @@ A free body diagram of the **box** is shown below.
       "sorter 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "correct": [
             "$x$",
@@ -8419,7 +7256,6 @@ A free body diagram of the **box** is shown below.
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/passage-missing-footnotes-and-title.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -8435,12 +7271,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/passage-missing-foot
 
 [[☃ passage-ref 1]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "passage 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "footnotes": "",
           "passageText": "a",
@@ -8448,7 +7281,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/passage-missing-foot
           "showLineNumbers": true,
           "static": false,
         },
-        "static": undefined,
         "type": "passage",
         "version": {
           "major": 0,
@@ -8456,15 +7288,11 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/passage-missing-foot
         },
       },
       "passage-ref 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "passageNumber": 1,
           "referenceNumber": 1,
-          "summaryText": undefined,
         },
-        "static": undefined,
         "type": "passage-ref",
         "version": {
           "major": 0,
@@ -8478,7 +7306,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/passage-missing-foot
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/passage-ref-missing-summaryText.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -8486,22 +7313,16 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/passage-ref-missing-
     {
       "content": "Anybody likely to need armor would certainly want to be wearing it. Armor was worn for sport, battle, civil defense, ceremony, and in some cases for hunting. This example—commissioned in 1591 by Sophie of Brandenburg as a Christmas gift for her husband, Christian I (reigned 1586–91)—is one of a set of twelve matching armors for the courtly sport of foot combat.",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "Many medieval European cities, such as London, Paris, Frankfurt, Vienna, and Milan, actually required their citizens to own armor and weapons so that they would be able to defend the city in times of war.",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "The answer is: All of the above. ",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
@@ -8519,20 +7340,12 @@ Anton Peffenhauser, *Foot-Combat Armor of Prince-Elector Christian I of Saxony (
 
 ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "image 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
-          "alt": undefined,
           "backgroundImage": {
-            "bottom": undefined,
             "height": 571,
-            "left": undefined,
-            "scale": undefined,
-            "top": undefined,
             "url": "https://ka-perseus-images.s3.amazonaws.com/3d84aeb69c515789bba289f5118b1d6e2b796ca1.jpg",
             "width": 357,
           },
@@ -8552,11 +7365,9 @@ Anton Peffenhauser, *Foot-Combat Armor of Prince-Elector Christian I of Saxony (
               10,
             ],
           ],
-          "static": undefined,
           "title": "
 ",
         },
-        "static": undefined,
         "type": "image",
         "version": {
           "major": 0,
@@ -8564,17 +7375,10 @@ Anton Peffenhauser, *Foot-Combat Armor of Prince-Elector Christian I of Saxony (
         },
       },
       "image 2": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
-          "alt": undefined,
           "backgroundImage": {
-            "bottom": undefined,
             "height": 0,
-            "left": undefined,
-            "scale": undefined,
-            "top": undefined,
             "url": null,
             "width": 0,
           },
@@ -8594,10 +7398,8 @@ Anton Peffenhauser, *Foot-Combat Armor of Prince-Elector Christian I of Saxony (
               10,
             ],
           ],
-          "static": undefined,
           "title": "",
         },
-        "static": undefined,
         "type": "image",
         "version": {
           "major": 0,
@@ -8605,9 +7407,7 @@ Anton Peffenhauser, *Foot-Combat Armor of Prince-Elector Christian I of Saxony (
         },
       },
       "passage 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "footnotes": "",
           "passageText": "",
@@ -8615,7 +7415,6 @@ Anton Peffenhauser, *Foot-Combat Armor of Prince-Elector Christian I of Saxony (
           "showLineNumbers": true,
           "static": false,
         },
-        "static": undefined,
         "type": "passage",
         "version": {
           "major": 0,
@@ -8623,15 +7422,11 @@ Anton Peffenhauser, *Foot-Combat Armor of Prince-Elector Christian I of Saxony (
         },
       },
       "passage-ref 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "passageNumber": 1,
           "referenceNumber": 1,
-          "summaryText": undefined,
         },
-        "static": undefined,
         "type": "passage-ref",
         "version": {
           "major": 0,
@@ -8639,50 +7434,33 @@ Anton Peffenhauser, *Foot-Combat Armor of Prince-Elector Christian I of Saxony (
         },
       },
       "radio 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "choices": [
             {
-              "clue": undefined,
               "content": "Members of the high nobility and the wealthiest of the knightly class",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "Soldiers, members of the civilian militia, and mercenaries",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "Horses and dogs",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
               "clue": "Armor (of different styles and quality) was worn by almost all levels of society: high nobility (emperors, dukes, and counts), knights, mercenaries, citizens, peasants, and even young boys. Horses and dogs could also be protected with armor. Price varied considerably based on materials, quality, and decoration.",
               "content": "All of the above",
               "correct": true,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
           ],
-          "countChoices": undefined,
-          "deselectEnabled": undefined,
           "displayCount": null,
-          "hasNoneOfTheAbove": undefined,
           "multipleSelect": false,
           "noneOfTheAbove": false,
           "onePerLine": true,
           "randomize": false,
         },
-        "static": undefined,
         "type": "radio",
         "version": {
           "major": 0,
@@ -8690,36 +7468,22 @@ Anton Peffenhauser, *Foot-Combat Armor of Prince-Elector Christian I of Saxony (
         },
       },
       "radio 2": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "choices": [
             {
-              "clue": undefined,
               "content": "",
-              "correct": undefined,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "",
-              "correct": undefined,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
           ],
-          "countChoices": undefined,
-          "deselectEnabled": undefined,
           "displayCount": null,
-          "hasNoneOfTheAbove": undefined,
           "multipleSelect": false,
           "noneOfTheAbove": false,
           "onePerLine": true,
           "randomize": false,
         },
-        "static": undefined,
         "type": "radio",
         "version": {
           "major": 0,
@@ -8727,9 +7491,7 @@ Anton Peffenhauser, *Foot-Combat Armor of Prince-Elector Christian I of Saxony (
         },
       },
       "table 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "answers": [
             [
@@ -8751,7 +7513,6 @@ Anton Peffenhauser, *Foot-Combat Armor of Prince-Elector Christian I of Saxony (
           ],
           "rows": 4,
         },
-        "static": undefined,
         "type": "table",
         "version": {
           "major": 0,
@@ -8765,7 +7526,6 @@ Anton Peffenhauser, *Foot-Combat Armor of Prince-Elector Christian I of Saxony (
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/plotter-missing-scaleY-and-snapsPerLine.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -8782,15 +7542,11 @@ $$
 
 $\\green5 - \\red3= \\purple{2}$",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "Michaela gjorde $\\purple{2}$ korgar mer än William.  ",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
@@ -8817,23 +7573,17 @@ $\\green5 - \\red3= \\purple{2}$",
         "width": 474,
       },
     },
-    "metadata": undefined,
     "widgets": {
       "input-number 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "answerType": "number",
-          "customKeypad": undefined,
           "inexact": false,
           "maxError": 0.1,
-          "rightAlign": undefined,
           "simplify": "required",
           "size": "normal",
           "value": 2,
         },
-        "static": undefined,
         "type": "input-number",
         "version": {
           "major": 0,
@@ -8841,9 +7591,6 @@ $\\green5 - \\red3= \\purple{2}$",
         },
       },
       "plotter 1": {
-        "alignment": undefined,
-        "graded": undefined,
-        "key": undefined,
         "options": {
           "categories": [
             "Calista",
@@ -8857,14 +7604,11 @@ $\\green5 - \\red3= \\purple{2}$",
             1,
             1,
           ],
-          "labelInterval": undefined,
           "labels": [
             "Child",
             "Baskets",
           ],
           "maxY": 5,
-          "picBoxHeight": undefined,
-          "picSize": undefined,
           "picUrl": "http://i.imgur.com/B8mGnxB.png",
           "plotDimensions": [
             380,
@@ -8880,9 +7624,7 @@ $\\green5 - \\red3= \\purple{2}$",
           ],
           "type": "pic",
         },
-        "static": undefined,
         "type": "plotter",
-        "version": undefined,
       },
     },
   },
@@ -8891,7 +7633,6 @@ $\\green5 - \\red3= \\purple{2}$",
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/plotter-with-undefined-plotDimensions.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -8899,13 +7640,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/plotter-with-undefin
     {
       "content": "If there is a 60° angle to the ground, this gives us a 30-60-90 triangle. ",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {
         "plotter 1": {
-          "alignment": undefined,
           "graded": true,
-          "key": undefined,
           "options": {
             "categories": [
               "",
@@ -8919,9 +7656,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/plotter-with-undefin
               "",
             ],
             "maxY": 10,
-            "picBoxHeight": undefined,
-            "picSize": undefined,
-            "picUrl": undefined,
             "plotDimensions": [
               380,
               300,
@@ -8933,7 +7667,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/plotter-with-undefin
             ],
             "type": "bar",
           },
-          "static": undefined,
           "type": "plotter",
           "version": {
             "major": 0,
@@ -8945,15 +7678,11 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/plotter-with-undefin
     {
       "content": "In this case, the horizontal component of force should be equal to the cos θ multiplied by the force of tension. ",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
     {
       "content": "Since we know θ=60, and T=30N, we can solve: 30cos60 = 15 N.",
       "images": {},
-      "metadata": undefined,
-      "replace": undefined,
       "widgets": {},
     },
   ],
@@ -8968,53 +7697,33 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/plotter-with-undefin
 
 ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "radio 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "choices": [
             {
-              "clue": undefined,
               "content": "15 N",
               "correct": true,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "30 N",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "60 N",
-              "correct": undefined,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "180 N",
-              "correct": undefined,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
           ],
-          "countChoices": undefined,
           "deselectEnabled": false,
           "displayCount": null,
-          "hasNoneOfTheAbove": undefined,
           "multipleSelect": false,
           "noneOfTheAbove": false,
           "onePerLine": true,
           "randomize": true,
         },
-        "static": undefined,
         "type": "radio",
         "version": {
           "major": 0,
@@ -9028,14 +7737,11 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/plotter-with-undefin
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/question-missing-content.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {},
   "hints": [],
-  "itemDataVersion": undefined,
   "question": {
     "content": "",
     "images": {},
-    "metadata": undefined,
     "widgets": {},
   },
 }
@@ -9043,7 +7749,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/question-missing-con
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/radio-choice-missing-content.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -9063,64 +7768,39 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/radio-choice-missing
 
 [[☃ group 4]]",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "group 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "content": "
 
 [[☃ radio 1]]",
           "images": {},
-          "metadata": undefined,
           "widgets": {
             "radio 1": {
-              "alignment": undefined,
               "graded": true,
-              "key": undefined,
               "options": {
                 "choices": [
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                 ],
-                "countChoices": undefined,
                 "deselectEnabled": false,
                 "displayCount": null,
-                "hasNoneOfTheAbove": undefined,
                 "multipleSelect": false,
                 "noneOfTheAbove": false,
                 "onePerLine": true,
                 "randomize": false,
               },
-              "static": undefined,
               "type": "radio",
               "version": {
                 "major": 0,
@@ -9129,7 +7809,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/radio-choice-missing
             },
           },
         },
-        "static": undefined,
         "type": "group",
         "version": {
           "major": 0,
@@ -9137,61 +7816,37 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/radio-choice-missing
         },
       },
       "group 2": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "content": "
 
 [[☃ radio 1]]",
           "images": {},
-          "metadata": undefined,
           "widgets": {
             "radio 1": {
-              "alignment": undefined,
               "graded": true,
-              "key": undefined,
               "options": {
                 "choices": [
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                 ],
-                "countChoices": undefined,
                 "deselectEnabled": false,
                 "displayCount": null,
-                "hasNoneOfTheAbove": undefined,
                 "multipleSelect": false,
                 "noneOfTheAbove": false,
                 "onePerLine": true,
                 "randomize": false,
               },
-              "static": undefined,
               "type": "radio",
               "version": {
                 "major": 0,
@@ -9200,7 +7855,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/radio-choice-missing
             },
           },
         },
-        "static": undefined,
         "type": "group",
         "version": {
           "major": 0,
@@ -9208,61 +7862,37 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/radio-choice-missing
         },
       },
       "group 3": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "content": "
 
 [[☃ radio 1]]",
           "images": {},
-          "metadata": undefined,
           "widgets": {
             "radio 1": {
-              "alignment": undefined,
               "graded": true,
-              "key": undefined,
               "options": {
                 "choices": [
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                 ],
-                "countChoices": undefined,
                 "deselectEnabled": false,
                 "displayCount": null,
-                "hasNoneOfTheAbove": undefined,
                 "multipleSelect": false,
                 "noneOfTheAbove": false,
                 "onePerLine": true,
                 "randomize": false,
               },
-              "static": undefined,
               "type": "radio",
               "version": {
                 "major": 0,
@@ -9271,7 +7901,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/radio-choice-missing
             },
           },
         },
-        "static": undefined,
         "type": "group",
         "version": {
           "major": 0,
@@ -9279,61 +7908,37 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/radio-choice-missing
         },
       },
       "group 4": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "content": "
 
 [[☃ radio 1]]",
           "images": {},
-          "metadata": undefined,
           "widgets": {
             "radio 1": {
-              "alignment": undefined,
               "graded": true,
-              "key": undefined,
               "options": {
                 "choices": [
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                   {
-                    "clue": undefined,
                     "content": "",
-                    "correct": undefined,
-                    "isNoneOfTheAbove": undefined,
-                    "widgets": undefined,
                   },
                 ],
-                "countChoices": undefined,
                 "deselectEnabled": false,
                 "displayCount": null,
-                "hasNoneOfTheAbove": undefined,
                 "multipleSelect": false,
                 "noneOfTheAbove": false,
                 "onePerLine": true,
                 "randomize": false,
               },
-              "static": undefined,
               "type": "radio",
               "version": {
                 "major": 0,
@@ -9342,7 +7947,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/radio-choice-missing
             },
           },
         },
-        "static": undefined,
         "type": "group",
         "version": {
           "major": 0,
@@ -9356,7 +7960,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/radio-choice-missing
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/radio-missing-noneOfTheAbove.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
     "chi2Table": false,
@@ -9380,27 +7983,19 @@ B &= \\{x: x \\text{ is a square in the plane P} \\}
 [[☃ radio 1]]
 ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "radio 1": {
         "alignment": "default",
         "graded": true,
-        "key": undefined,
         "options": {
           "choices": [
             {
-              "clue": undefined,
               "content": "Yes",
               "correct": false,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
             {
-              "clue": undefined,
               "content": "No",
               "correct": true,
-              "isNoneOfTheAbove": undefined,
-              "widgets": undefined,
             },
           ],
           "countChoices": false,
@@ -9408,8 +8003,6 @@ B &= \\{x: x \\text{ is a square in the plane P} \\}
           "displayCount": null,
           "hasNoneOfTheAbove": false,
           "multipleSelect": false,
-          "noneOfTheAbove": undefined,
-          "onePerLine": undefined,
           "randomize": false,
         },
         "static": false,
@@ -9426,7 +8019,6 @@ B &= \\{x: x \\text{ is a square in the plane P} \\}
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/simulator-widget.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -9440,12 +8032,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/simulator-widget.jso
 
 ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "simulator 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "numTrials": 100,
           "proportionLabel": "Underlying proportion",
@@ -9453,7 +8042,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/simulator-widget.jso
           "xAxisLabel": "Proportion (%)",
           "yAxisLabel": "Number of times seen",
         },
-        "static": undefined,
         "type": "deprecated-standin",
         "version": {
           "major": 0,
@@ -9461,9 +8049,7 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/simulator-widget.jso
         },
       },
       "sorter 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "correct": [
             "$x$",
@@ -9473,7 +8059,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/simulator-widget.jso
           "layout": "horizontal",
           "padding": true,
         },
-        "static": undefined,
         "type": "sorter",
         "version": {
           "major": 0,
@@ -9487,7 +8072,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/simulator-widget.jso
 
 exports[`parseAndTypecheckPerseusItem correctly parses data/transformer-widget.json 1`] = `
 {
-  "answer": undefined,
   "answerArea": {
     "calculator": false,
   },
@@ -9501,12 +8085,9 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/transformer-widget.j
 
 ",
     "images": {},
-    "metadata": undefined,
     "widgets": {
       "transformer 1": {
-        "alignment": undefined,
         "graded": true,
-        "key": undefined,
         "options": {
           "correct": {
             "shape": {
@@ -9641,7 +8222,6 @@ exports[`parseAndTypecheckPerseusItem correctly parses data/transformer-widget.j
           },
           "version": 1.2,
         },
-        "static": undefined,
         "type": "deprecated-standin",
         "version": {
           "major": 0,

From 165305e11c5ba196e1a2a9c4fd814d387d34dc55 Mon Sep 17 00:00:00 2001
From: Jeremy Wiebe <jeremy@khanacademy.org>
Date: Mon, 20 Jan 2025 13:03:21 -0800
Subject: [PATCH 07/10] Disable Chromatic snapshots globally (#2130)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

## Summary:

This PR disables Chromatic snapshots globally (in `preview.tsx`) and then enables it in the one `-regression.stories.tsx` file.

Going forward, we can enable snapshots per-file.

We are making this change to address the fact that hte Perseus repo has been burning through our organization-wide Turbosnap budget because even skipped tests contribute to the Turbosnap count when snapshots are enabled (see the support thread that Juan had with Chromatic: https://khanacademy.slack.com/archives/CEA6W0F6F/p1737389339991279?thread_ts=1737389278.405609&cid=CEA6W0F6F). Specifically, in our Perseus repo we use `onlyStoryFiles`:

> OnlyStoryNames, OnlyStoryFiles work exactly like TurboSnap. The bypassed snapshots (skipping 366 tests) are counted and charged as TurboSnaps.

| Before | After |
| ------ | ----- |
| <img width="920" alt="original" src="https://github.com/user-attachments/assets/1a4db65c-dee6-4d15-9e20-743a3eae1394" /> | <img width="956" alt="after" src="https://github.com/user-attachments/assets/8bdb7edb-3726-4a20-9a8a-d003af5b33ec" /> |



Issue: "none"

## Test plan:

Land the PR and then watch the build and make sure it doesn't write out that it skipped +300 tests.

Author: jeremywiebe

Reviewers: jeremywiebe, jandrade, #perseus, nishasy

Required Reviewers:

Approved By: jandrade

Checks: ✅ Publish npm snapshot (ubuntu-latest, 20.x), ✅ Lint, Typecheck, Format, and Test (ubuntu-latest, 20.x), ✅ Check builds for changes in size (ubuntu-latest, 20.x), ✅ Cypress (ubuntu-latest, 20.x), ✅ Publish Storybook to Chromatic (ubuntu-latest, 20.x), ✅ Check for .changeset entries for all changed files (ubuntu-latest, 20.x)

Pull Request URL: https://github.com/Khan/perseus/pull/2130
---
 .changeset/dull-cars-reply.md                 |   5 +
 .changeset/quiet-files-marry.md               |   2 +
 .github/workflows/storybook.yml               |   2 +-
 .storybook/preview.tsx                        |  10 +
 .../interactive-graph-regression.stories.tsx  | 431 +++++++++---------
 5 files changed, 227 insertions(+), 223 deletions(-)
 create mode 100644 .changeset/dull-cars-reply.md
 create mode 100644 .changeset/quiet-files-marry.md

diff --git a/.changeset/dull-cars-reply.md b/.changeset/dull-cars-reply.md
new file mode 100644
index 0000000000..6faf0ca898
--- /dev/null
+++ b/.changeset/dull-cars-reply.md
@@ -0,0 +1,5 @@
+---
+"@khanacademy/perseus": patch
+---
+
+Change interactive-graph visual regression stories to Storybook's CSF v3
diff --git a/.changeset/quiet-files-marry.md b/.changeset/quiet-files-marry.md
new file mode 100644
index 0000000000..a845151cc8
--- /dev/null
+++ b/.changeset/quiet-files-marry.md
@@ -0,0 +1,2 @@
+---
+---
diff --git a/.github/workflows/storybook.yml b/.github/workflows/storybook.yml
index 6f9ff9c54e..fb342746f6 100644
--- a/.github/workflows/storybook.yml
+++ b/.github/workflows/storybook.yml
@@ -43,7 +43,7 @@ jobs:
                   token: ${{ secrets.GITHUB_TOKEN }}
                   projectToken: ${{ secrets.CHROMATIC_APP_CODE }}
                   autoAcceptChanges: "main"
-                  onlyStoryFiles: "**/*regression.stories.tsx"
+                  onlyStoryFiles: "**/*-regression.stories.tsx"
                   # NOTE: We cannot enable `onlyChanged` because it is
                   # incompatible with `onlyStoryFiles` which we use above.
                   # onlyChanged: true # Enable TurboSnap!
diff --git a/.storybook/preview.tsx b/.storybook/preview.tsx
index f4b81fb8b7..925f19a4ae 100644
--- a/.storybook/preview.tsx
+++ b/.storybook/preview.tsx
@@ -41,6 +41,16 @@ const preview: Preview = {
     // These parameters apply to all stories, both inside and outside the fixture
     // framework.
     parameters: {
+        // Disables Chromatic's snapshotting on a global level
+        // We disable snapshotting globally because we have enabled
+        // turbosnaps for `-regression.stories.tsx` files. If we have
+        // snapshots enabled globally, we pay for turbosnaps even for
+        // skipped stories/tests (which is all of them).
+        // We then enable snapshots for `-regression.stories.tsx` files in
+        // each of those files (unfortunately, this is how we have to do
+        // it).
+        chromatic: {disableSnapshot: true},
+
         options: {
             storySort: {
                 order: ["Perseus", "PerseusEditor", "Math-Input", "*"],
diff --git a/packages/perseus/src/widgets/interactive-graphs/interactive-graph-regression.stories.tsx b/packages/perseus/src/widgets/interactive-graphs/interactive-graph-regression.stories.tsx
index 0362555af8..2d6276cd84 100644
--- a/packages/perseus/src/widgets/interactive-graphs/interactive-graph-regression.stories.tsx
+++ b/packages/perseus/src/widgets/interactive-graphs/interactive-graph-regression.stories.tsx
@@ -6,261 +6,248 @@ import {mockStrings} from "../../strings";
 import {interactiveGraphQuestionBuilder} from "./interactive-graph-question-builder";
 
 import type {PerseusRenderer} from "@khanacademy/perseus-core";
+import type {Meta, StoryObj} from "@storybook/react";
 
-type StoryArgs = Record<any, any>;
+type Story = StoryObj<typeof MafsQuestionRenderer>;
 
-export default {
+const meta: Meta<typeof MafsQuestionRenderer> = {
     title: "Perseus/Widgets/Interactive Graph Visual Regression Tests",
+    component: MafsQuestionRenderer,
+    parameters: {
+        chromatic: {disableSnapshot: false},
+    },
 };
+export default meta;
 
-export const MafsWithCustomAxisLabels = (
-    args: StoryArgs,
-): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder()
+function MobileContainerDecorator(Story) {
+    return (
+        <div className="framework-perseus perseus-mobile">
+            <Story />
+        </div>
+    );
+}
+
+export const MafsWithCustomAxisLabels: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
             .withAxisLabels(
                 "\\text{Custom $x$ label}",
                 "\\text{Custom $y$ label}",
             )
-            .build()}
-    />
-);
-
-export const MafsWithFractionalGridStep = (
-    args: StoryArgs,
-): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder()
+            .build(),
+    },
+};
+
+export const MafsWithFractionalGridStep: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
             .withGridStep(2.571, 3.123)
-            .build()}
-    />
-);
-
-export const MafsWithFractionalAxisTicks = (
-    args: StoryArgs,
-): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder()
+            .build(),
+    },
+};
+
+export const MafsWithFractionalAxisTicks: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
             .withTickStep(1.5, 1.5)
-            .build()}
-    />
-);
+            .build(),
+    },
+};
 
-export const MafsWithAxesMarkings = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder()
+export const MafsWithAxesMarkings: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
             .withMarkings("axes")
-            .build()}
-    />
-);
+            .build(),
+    },
+};
 
-export const MafsWithGridMarkings = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder()
+export const MafsWithGridMarkings: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
             .withMarkings("grid")
-            .build()}
-    />
-);
+            .build(),
+    },
+};
 
-export const MafsWithNoMarkings = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder()
+export const MafsWithNoMarkings: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
             .withMarkings("none")
-            .build()}
-    />
-);
+            .build(),
+    },
+};
 
-export const MafsWithSmallRange = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder()
+export const MafsWithSmallRange: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
             .withXRange(-2, 2)
             .withYRange(-2, 2)
-            .build()}
-    />
-);
+            .build(),
+    },
+};
 
-export const MafsWithLargeRange = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder()
+export const MafsWithLargeRange: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
             .withXRange(-50, 50)
             .withYRange(-50, 50)
-            .build()}
-    />
-);
-
-export const MafsWithYAxisAtLeft = (args: StoryArgs): React.ReactElement => (
-    <>
-        <MafsQuestionRenderer
-            question={interactiveGraphQuestionBuilder()
-                .withXRange(0, 20)
-                .addLockedLine([1, 1], [5, 2])
-                .build()}
-        />
-    </>
-);
-
-export const MafsWithYAxisNearLeft = (args: StoryArgs): React.ReactElement => (
-    <>
-        <MafsQuestionRenderer
-            question={interactiveGraphQuestionBuilder()
-                .withXRange(-1, 20)
-                .addLockedLine([1, 1], [5, 2])
-                .build()}
-        />
-    </>
-);
-
-export const MafsWithYAxisJustOverLeft = (
-    args: StoryArgs,
-): React.ReactElement => (
-    <>
-        <MafsQuestionRenderer
-            question={interactiveGraphQuestionBuilder()
-                .withXRange(-3, 20)
-                .addLockedLine([1, 1], [5, 2])
-                .build()}
-        />
-    </>
-);
-
-export const MafsWithYAxisOffLeft = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder().withXRange(1, 20).build()}
-    />
-);
-
-export const MafsWithYAxisOffFarLeft = (
-    args: StoryArgs,
-): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder().withXRange(6, 20).build()}
-    />
-);
-
-export const MafsWithYAxisAtRight = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder().withXRange(-20, 0).build()}
-    />
-);
-
-export const MafsWithYAxisOffRight = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder().withXRange(-20, -1).build()}
-    />
-);
-
-export const MafsWithXAxisAtBottom = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder().withYRange(0, 20).build()}
-    />
-);
-
-export const MafsWithXAxisNearBottom = (
-    args: StoryArgs,
-): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder().withYRange(-1, 20).build()}
-    />
-);
-
-export const MafsWithXAxisOffBottom = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder().withYRange(1, 20).build()}
-    />
-);
-
-export const MafsWithXAxisJustOverBottom = (
-    args: StoryArgs,
-): React.ReactElement => (
-    <>
-        <MafsQuestionRenderer
-            question={interactiveGraphQuestionBuilder()
-                .withYRange(-3, 20)
-                .addLockedLine([-3, 2], [5, 16])
-                .build()}
-        />
-    </>
-);
-
-export const MafsWithXAxisAtTop = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder().withYRange(-20, 0).build()}
-    />
-);
-
-export const MafsWithXAxisOffTop = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder().withYRange(-20, -1).build()}
-    />
-);
-
-export const MafsInMobileContainer = (args: StoryArgs): React.ReactElement => (
-    <div className="framework-perseus perseus-mobile">
-        <MafsQuestionRenderer
-            question={interactiveGraphQuestionBuilder().build()}
-        />
-    </div>
-);
-
-export const MafsWithMultipleSegments = (
-    args: StoryArgs,
-): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder()
+            .build(),
+    },
+};
+
+export const MafsWithYAxisAtLeft: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
+            .withXRange(0, 20)
+            .addLockedLine([1, 1], [5, 2])
+            .build(),
+    },
+};
+
+export const MafsWithYAxisNearLeft: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
+            .withXRange(-1, 20)
+            .addLockedLine([1, 1], [5, 2])
+            .build(),
+    },
+};
+
+export const MafsWithYAxisJustOverLeft: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
+            .withXRange(-3, 20)
+            .addLockedLine([1, 1], [5, 2])
+            .build(),
+    },
+};
+
+export const MafsWithYAxisOffLeft: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder().withXRange(1, 20).build(),
+    },
+};
+
+export const MafsWithYAxisOffFarLeft: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder().withXRange(6, 20).build(),
+    },
+};
+
+export const MafsWithYAxisAtRight: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder().withXRange(-20, 0).build(),
+    },
+};
+
+export const MafsWithYAxisOffRight: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder().withXRange(-20, -1).build(),
+    },
+};
+
+export const MafsWithXAxisAtBottom: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder().withYRange(0, 20).build(),
+    },
+};
+
+export const MafsWithXAxisNearBottom: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder().withYRange(-1, 20).build(),
+    },
+};
+
+export const MafsWithXAxisOffBottom: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder().withYRange(1, 20).build(),
+    },
+};
+
+export const MafsWithXAxisJustOverBottom: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
+            .withYRange(-3, 20)
+            .addLockedLine([-3, 2], [5, 16])
+            .build(),
+    },
+};
+
+export const MafsWithXAxisAtTop: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder().withYRange(-20, 0).build(),
+    },
+};
+
+export const MafsWithXAxisOffTop: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder().withYRange(-20, -1).build(),
+    },
+};
+
+export const MafsInMobileContainer: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder().build(),
+    },
+    decorators: [MobileContainerDecorator],
+};
+
+export const MafsWithMultipleSegments: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
             .withSegments({numSegments: 3})
-            .build()}
-    />
-);
-
-export const MafsCircleGraphWithNonsquareRange = (
-    args: StoryArgs,
-): React.ReactElement => (
-    <div className="framework-perseus perseus-mobile">
-        <MafsQuestionRenderer
-            question={interactiveGraphQuestionBuilder()
-                .withCircle()
-                .withXRange(-10, 10)
-                .withYRange(-5, 5)
-                .build()}
-        />
-    </div>
-);
-
-export const MafsLineGraphWithNonsquareRange = (
-    args: StoryArgs,
-): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder()
+            .build(),
+    },
+};
+
+export const MafsCircleGraphWithNonsquareRange: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
+            .withCircle()
+            .withXRange(-10, 10)
+            .withYRange(-5, 5)
+            .build(),
+    },
+    // NOTE(jeremy): I migrated these stories to the v3 CSF story format, but
+    // I'm unclear why this one story forces mobile when none of the others do,
+    // and this story doesn't look mobile-specific. :thinking:
+    decorators: [MobileContainerDecorator],
+};
+
+export const MafsLineGraphWithNonsquareRange: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
             .addLockedLine([-3, -3], [3, 3])
             .withXRange(-5, 5)
             .withYRange(-10, 10)
-            .build()}
-    />
-);
+            .build(),
+    },
+};
 
-export const MafsWithLockedPoints = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder()
+export const MafsWithLockedPoints: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
             .addLockedPointAt(3, 2)
             .addLockedPointAt(-1, 1)
             .addLockedPointAt(0, -4)
-            .build()}
-    />
-);
+            .build(),
+    },
+};
 
-export const MafsWithLockedLine = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder()
+export const MafsWithLockedLine: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder()
             .addLockedLine([-1, 1], [2, 3])
-            .build()}
-    />
-);
-
-export const MafsWithProtractor = (args: StoryArgs): React.ReactElement => (
-    <MafsQuestionRenderer
-        question={interactiveGraphQuestionBuilder().withProtractor().build()}
-    />
-);
+            .build(),
+    },
+};
+
+export const MafsWithProtractor: Story = {
+    args: {
+        question: interactiveGraphQuestionBuilder().withProtractor().build(),
+    },
+};
 
 function MafsQuestionRenderer(props: {question: PerseusRenderer}) {
     const {question} = props;

From 4a9810e33b35cce6c0d929b96e124823cde6df3c Mon Sep 17 00:00:00 2001
From: Khan Actions Bot <56267880+khan-actions-bot@users.noreply.github.com>
Date: Mon, 20 Jan 2025 18:41:33 -0500
Subject: [PATCH 08/10] Version Packages (#2117)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated.


# Releases
## @khanacademy/perseus@51.0.0

### Major Changes

-   [#2101](https://github.com/Khan/perseus/pull/2101) [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae) Thanks [@handeyeco](https://github.com/handeyeco)! - Move scorers and validators to `perseus-score`

### Minor Changes

-   [#2127](https://github.com/Khan/perseus/pull/2127) [`6f2813cfc`](https://github.com/Khan/perseus/commit/6f2813cfcb6bce063d8f0f8f66219ce0123aac66) Thanks [@benchristel](https://github.com/benchristel)! - Avoid adding undefined values to objects parsed from Perseus JSON when properties are missing.

### Patch Changes

-   [#2130](https://github.com/Khan/perseus/pull/2130) [`165305e11`](https://github.com/Khan/perseus/commit/165305e11c5ba196e1a2a9c4fd814d387d34dc55) Thanks [@jeremywiebe](https://github.com/jeremywiebe)! - Change interactive-graph visual regression stories to Storybook's CSF v3


-   [#2077](https://github.com/Khan/perseus/pull/2077) [`faccc2d59`](https://github.com/Khan/perseus/commit/faccc2d5959a4a7051720f7a3dfe4a4875b6ace9) Thanks [@benchristel](https://github.com/benchristel)! - Internal: Enable the exhaustive test tool for parsePerseusItem to test articles.


-   [#2030](https://github.com/Khan/perseus/pull/2030) [`d96821e08`](https://github.com/Khan/perseus/commit/d96821e08b3f80eb0a277882f4a8a40330b27adc) Thanks [@nishasy](https://github.com/nishasy)! - [SR] Linear System - add screen reader support for Linear System interactive graph


-   [#2036](https://github.com/Khan/perseus/pull/2036) [`0f8d11c0b`](https://github.com/Khan/perseus/commit/0f8d11c0b8c00a10eb49f2d84b664803c5c83f3f) Thanks [@nishasy](https://github.com/nishasy)! - [SR] Ray graph - Add screen reader support for Ray interactive graph


-   [#2109](https://github.com/Khan/perseus/pull/2109) [`41ffd4a71`](https://github.com/Khan/perseus/commit/41ffd4a71673399657d7024c206af4fa4e0be267) Thanks [@dependabot](https://github.com/apps/dependabot)! - Updating our wonder-blocks packages with the latest versions.

-   Updated dependencies \[[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae), [`41ffd4a71`](https://github.com/Khan/perseus/commit/41ffd4a71673399657d7024c206af4fa4e0be267)]:
    -   @khanacademy/kmath@0.3.0
    -   @khanacademy/perseus-core@3.2.0
    -   @khanacademy/perseus-score@1.1.0
    -   @khanacademy/math-input@22.2.1
    -   @khanacademy/kas@0.4.11
    -   @khanacademy/keypad-context@1.0.14
    -   @khanacademy/perseus-linter@1.2.13
    -   @khanacademy/pure-markdown@0.3.22
    -   @khanacademy/simple-markdown@0.13.15

## @khanacademy/kmath@0.3.0

### Minor Changes

-   [#2101](https://github.com/Khan/perseus/pull/2101) [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae) Thanks [@handeyeco](https://github.com/handeyeco)! - Move scorers and validators to `perseus-score`

### Patch Changes

-   Updated dependencies \[[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
    -   @khanacademy/perseus-core@3.2.0

## @khanacademy/perseus-core@3.2.0

### Minor Changes

-   [#2101](https://github.com/Khan/perseus/pull/2101) [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae) Thanks [@handeyeco](https://github.com/handeyeco)! - Move scorers and validators to `perseus-score`

## @khanacademy/perseus-score@1.1.0

### Minor Changes

-   [#2101](https://github.com/Khan/perseus/pull/2101) [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae) Thanks [@handeyeco](https://github.com/handeyeco)! - Move scorers and validators to `perseus-score`

### Patch Changes

-   Updated dependencies \[[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
    -   @khanacademy/kmath@0.3.0
    -   @khanacademy/perseus-core@3.2.0
    -   @khanacademy/kas@0.4.11

## @khanacademy/kas@0.4.11

### Patch Changes

-   Updated dependencies \[[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
    -   @khanacademy/perseus-core@3.2.0

## @khanacademy/keypad-context@1.0.14

### Patch Changes

-   Updated dependencies \[[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
    -   @khanacademy/perseus-core@3.2.0

## @khanacademy/math-input@22.2.1

### Patch Changes

-   [#2101](https://github.com/Khan/perseus/pull/2101) [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae) Thanks [@handeyeco](https://github.com/handeyeco)! - Move scorers and validators to `perseus-score`


-   [#2109](https://github.com/Khan/perseus/pull/2109) [`41ffd4a71`](https://github.com/Khan/perseus/commit/41ffd4a71673399657d7024c206af4fa4e0be267) Thanks [@dependabot](https://github.com/apps/dependabot)! - Updating our wonder-blocks packages with the latest versions.

-   Updated dependencies \[[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
    -   @khanacademy/perseus-core@3.2.0
    -   @khanacademy/keypad-context@1.0.14

## @khanacademy/perseus-editor@17.3.1

### Patch Changes

-   [#2101](https://github.com/Khan/perseus/pull/2101) [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae) Thanks [@handeyeco](https://github.com/handeyeco)! - Move scorers and validators to `perseus-score`


-   [#2126](https://github.com/Khan/perseus/pull/2126) [`518b005f2`](https://github.com/Khan/perseus/commit/518b005f2b0b9a173dec6526a7b5c808062fe144) Thanks [@benchristel](https://github.com/benchristel)! - Fix a React warning about non-unique component keys in the exercise editor.


-   [#2109](https://github.com/Khan/perseus/pull/2109) [`41ffd4a71`](https://github.com/Khan/perseus/commit/41ffd4a71673399657d7024c206af4fa4e0be267) Thanks [@dependabot](https://github.com/apps/dependabot)! - Updating our wonder-blocks packages with the latest versions.

-   Updated dependencies \[[`165305e11`](https://github.com/Khan/perseus/commit/165305e11c5ba196e1a2a9c4fd814d387d34dc55), [`6f2813cfc`](https://github.com/Khan/perseus/commit/6f2813cfcb6bce063d8f0f8f66219ce0123aac66), [`faccc2d59`](https://github.com/Khan/perseus/commit/faccc2d5959a4a7051720f7a3dfe4a4875b6ace9), [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae), [`d96821e08`](https://github.com/Khan/perseus/commit/d96821e08b3f80eb0a277882f4a8a40330b27adc), [`0f8d11c0b`](https://github.com/Khan/perseus/commit/0f8d11c0b8c00a10eb49f2d84b664803c5c83f3f), [`41ffd4a71`](https://github.com/Khan/perseus/commit/41ffd4a71673399657d7024c206af4fa4e0be267)]:
    -   @khanacademy/perseus@51.0.0
    -   @khanacademy/kmath@0.3.0
    -   @khanacademy/perseus-core@3.2.0
    -   @khanacademy/perseus-score@1.1.0
    -   @khanacademy/math-input@22.2.1
    -   @khanacademy/kas@0.4.11
    -   @khanacademy/keypad-context@1.0.14
    -   @khanacademy/pure-markdown@0.3.22

## @khanacademy/perseus-linter@1.2.13

### Patch Changes

-   Updated dependencies \[[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
    -   @khanacademy/perseus-core@3.2.0

## @khanacademy/pure-markdown@0.3.22

### Patch Changes

-   Updated dependencies \[[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
    -   @khanacademy/perseus-core@3.2.0
    -   @khanacademy/simple-markdown@0.13.15

## @khanacademy/simple-markdown@0.13.15

### Patch Changes

-   Updated dependencies \[[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
    -   @khanacademy/perseus-core@3.2.0

## @khanacademy/perseus-dev-ui@5.1.1

### Patch Changes

-   [#2101](https://github.com/Khan/perseus/pull/2101) [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae) Thanks [@handeyeco](https://github.com/handeyeco)! - Move scorers and validators to `perseus-score`


-   [#2109](https://github.com/Khan/perseus/pull/2109) [`41ffd4a71`](https://github.com/Khan/perseus/commit/41ffd4a71673399657d7024c206af4fa4e0be267) Thanks [@dependabot](https://github.com/apps/dependabot)! - Updating our wonder-blocks packages with the latest versions.

-   Updated dependencies \[[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae), [`41ffd4a71`](https://github.com/Khan/perseus/commit/41ffd4a71673399657d7024c206af4fa4e0be267)]:
    -   @khanacademy/kmath@0.3.0
    -   @khanacademy/perseus-core@3.2.0
    -   @khanacademy/math-input@22.2.1
    -   @khanacademy/kas@0.4.11
    -   @khanacademy/perseus-linter@1.2.13
    -   @khanacademy/pure-markdown@0.3.22
    -   @khanacademy/simple-markdown@0.13.15

Author: khan-actions-bot

Reviewers: jeremywiebe

Required Reviewers:

Approved By: jeremywiebe

Checks: ⏭️  Publish npm snapshot, ✅ Check for .changeset entries for all changed files (ubuntu-latest, 20.x), ✅ Check builds for changes in size (ubuntu-latest, 20.x), ✅ Lint, Typecheck, Format, and Test (ubuntu-latest, 20.x), ✅ Cypress (ubuntu-latest, 20.x)

Pull Request URL: https://github.com/Khan/perseus/pull/2117
---
 .changeset/dull-cars-reply.md         |  5 ----
 .changeset/happy-pets-breathe.md      |  5 ----
 .changeset/new-tomatoes-fly.md        |  5 ----
 .changeset/quick-spoons-whisper.md    | 11 ---------
 .changeset/quiet-files-marry.md       |  2 --
 .changeset/slimy-scissors-smash.md    |  5 ----
 .changeset/tidy-baboons-tie.md        |  5 ----
 .changeset/wild-keys-sit.md           |  5 ----
 .changeset/young-beers-wave.md        |  8 -------
 dev/CHANGELOG.md                      | 17 ++++++++++++++
 dev/package.json                      | 16 ++++++-------
 packages/kas/CHANGELOG.md             |  7 ++++++
 packages/kas/package.json             |  4 ++--
 packages/keypad-context/CHANGELOG.md  |  7 ++++++
 packages/keypad-context/package.json  |  4 ++--
 packages/kmath/CHANGELOG.md           | 11 +++++++++
 packages/kmath/package.json           |  4 ++--
 packages/math-input/CHANGELOG.md      | 12 ++++++++++
 packages/math-input/package.json      |  6 ++---
 packages/perseus-core/CHANGELOG.md    |  6 +++++
 packages/perseus-core/package.json    |  2 +-
 packages/perseus-editor/CHANGELOG.md  | 20 ++++++++++++++++
 packages/perseus-editor/package.json  | 20 ++++++++--------
 packages/perseus-linter/CHANGELOG.md  |  7 ++++++
 packages/perseus-linter/package.json  |  6 ++---
 packages/perseus-score/CHANGELOG.md   | 13 +++++++++++
 packages/perseus-score/package.json   |  8 +++----
 packages/perseus/CHANGELOG.md         | 33 +++++++++++++++++++++++++++
 packages/perseus/package.json         | 20 ++++++++--------
 packages/pure-markdown/CHANGELOG.md   |  8 +++++++
 packages/pure-markdown/package.json   |  6 ++---
 packages/simple-markdown/CHANGELOG.md |  7 ++++++
 packages/simple-markdown/package.json |  4 ++--
 33 files changed, 198 insertions(+), 101 deletions(-)
 delete mode 100644 .changeset/dull-cars-reply.md
 delete mode 100644 .changeset/happy-pets-breathe.md
 delete mode 100644 .changeset/new-tomatoes-fly.md
 delete mode 100644 .changeset/quick-spoons-whisper.md
 delete mode 100644 .changeset/quiet-files-marry.md
 delete mode 100644 .changeset/slimy-scissors-smash.md
 delete mode 100644 .changeset/tidy-baboons-tie.md
 delete mode 100644 .changeset/wild-keys-sit.md
 delete mode 100644 .changeset/young-beers-wave.md

diff --git a/.changeset/dull-cars-reply.md b/.changeset/dull-cars-reply.md
deleted file mode 100644
index 6faf0ca898..0000000000
--- a/.changeset/dull-cars-reply.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@khanacademy/perseus": patch
----
-
-Change interactive-graph visual regression stories to Storybook's CSF v3
diff --git a/.changeset/happy-pets-breathe.md b/.changeset/happy-pets-breathe.md
deleted file mode 100644
index 414ae86dad..0000000000
--- a/.changeset/happy-pets-breathe.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@khanacademy/perseus": minor
----
-
-Avoid adding undefined values to objects parsed from Perseus JSON when properties are missing.
diff --git a/.changeset/new-tomatoes-fly.md b/.changeset/new-tomatoes-fly.md
deleted file mode 100644
index eacbb409e2..0000000000
--- a/.changeset/new-tomatoes-fly.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@khanacademy/perseus": patch
----
-
-Internal: Enable the exhaustive test tool for parsePerseusItem to test articles.
diff --git a/.changeset/quick-spoons-whisper.md b/.changeset/quick-spoons-whisper.md
deleted file mode 100644
index 14438fa3e8..0000000000
--- a/.changeset/quick-spoons-whisper.md
+++ /dev/null
@@ -1,11 +0,0 @@
----
-"@khanacademy/perseus": major
-"@khanacademy/kmath": minor
-"@khanacademy/perseus-core": minor
-"@khanacademy/perseus-score": minor
-"@khanacademy/perseus-dev-ui": patch
-"@khanacademy/math-input": patch
-"@khanacademy/perseus-editor": patch
----
-
-Move scorers and validators to `perseus-score`
diff --git a/.changeset/quiet-files-marry.md b/.changeset/quiet-files-marry.md
deleted file mode 100644
index a845151cc8..0000000000
--- a/.changeset/quiet-files-marry.md
+++ /dev/null
@@ -1,2 +0,0 @@
----
----
diff --git a/.changeset/slimy-scissors-smash.md b/.changeset/slimy-scissors-smash.md
deleted file mode 100644
index f2d5ffc205..0000000000
--- a/.changeset/slimy-scissors-smash.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@khanacademy/perseus-editor": patch
----
-
-Fix a React warning about non-unique component keys in the exercise editor.
diff --git a/.changeset/tidy-baboons-tie.md b/.changeset/tidy-baboons-tie.md
deleted file mode 100644
index 20d14a409b..0000000000
--- a/.changeset/tidy-baboons-tie.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@khanacademy/perseus": patch
----
-
-[SR] Linear System - add screen reader support for Linear System interactive graph
diff --git a/.changeset/wild-keys-sit.md b/.changeset/wild-keys-sit.md
deleted file mode 100644
index 6e9702456f..0000000000
--- a/.changeset/wild-keys-sit.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@khanacademy/perseus": patch
----
-
-[SR] Ray graph - Add screen reader support for Ray interactive graph
diff --git a/.changeset/young-beers-wave.md b/.changeset/young-beers-wave.md
deleted file mode 100644
index 7c45fc6d91..0000000000
--- a/.changeset/young-beers-wave.md
+++ /dev/null
@@ -1,8 +0,0 @@
----
-"@khanacademy/perseus-dev-ui": patch
-"@khanacademy/math-input": patch
-"@khanacademy/perseus": patch
-"@khanacademy/perseus-editor": patch
----
-
-Updating our wonder-blocks packages with the latest versions.
diff --git a/dev/CHANGELOG.md b/dev/CHANGELOG.md
index d28a288b24..f3789a19e7 100644
--- a/dev/CHANGELOG.md
+++ b/dev/CHANGELOG.md
@@ -1,5 +1,22 @@
 # @khanacademy/perseus-dev-ui
 
+## 5.1.1
+
+### Patch Changes
+
+-   [#2101](https://github.com/Khan/perseus/pull/2101) [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae) Thanks [@handeyeco](https://github.com/handeyeco)! - Move scorers and validators to `perseus-score`
+
+*   [#2109](https://github.com/Khan/perseus/pull/2109) [`41ffd4a71`](https://github.com/Khan/perseus/commit/41ffd4a71673399657d7024c206af4fa4e0be267) Thanks [@dependabot](https://github.com/apps/dependabot)! - Updating our wonder-blocks packages with the latest versions.
+
+*   Updated dependencies [[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae), [`41ffd4a71`](https://github.com/Khan/perseus/commit/41ffd4a71673399657d7024c206af4fa4e0be267)]:
+    -   @khanacademy/kmath@0.3.0
+    -   @khanacademy/perseus-core@3.2.0
+    -   @khanacademy/math-input@22.2.1
+    -   @khanacademy/kas@0.4.11
+    -   @khanacademy/perseus-linter@1.2.13
+    -   @khanacademy/pure-markdown@0.3.22
+    -   @khanacademy/simple-markdown@0.13.15
+
 ## 5.1.0
 
 ### Minor Changes
diff --git a/dev/package.json b/dev/package.json
index 676b1a523c..5474f3cea3 100644
--- a/dev/package.json
+++ b/dev/package.json
@@ -3,7 +3,7 @@
     "description": "Perseus dev UI",
     "author": "Khan Academy",
     "license": "MIT",
-    "version": "5.1.0",
+    "version": "5.1.1",
     "private": true,
     "repository": {
         "type": "git",
@@ -14,13 +14,13 @@
         "dev": "vite"
     },
     "dependencies": {
-        "@khanacademy/kas": "^0.4.10",
-        "@khanacademy/kmath": "^0.2.0",
-        "@khanacademy/math-input": "^22.2.0",
-        "@khanacademy/perseus-core": "3.1.0",
-        "@khanacademy/perseus-linter": "^1.2.12",
-        "@khanacademy/pure-markdown": "^0.3.21",
-        "@khanacademy/simple-markdown": "^0.13.14",
+        "@khanacademy/kas": "^0.4.11",
+        "@khanacademy/kmath": "^0.3.0",
+        "@khanacademy/math-input": "^22.2.1",
+        "@khanacademy/perseus-core": "3.2.0",
+        "@khanacademy/perseus-linter": "^1.2.13",
+        "@khanacademy/pure-markdown": "^0.3.22",
+        "@khanacademy/simple-markdown": "^0.13.15",
         "@khanacademy/wonder-blocks-banner": "4.0.5",
         "@khanacademy/wonder-blocks-icon": "5.0.5",
         "@khanacademy/wonder-blocks-icon-button": "6.0.5",
diff --git a/packages/kas/CHANGELOG.md b/packages/kas/CHANGELOG.md
index 98136c8f53..28be3b48de 100644
--- a/packages/kas/CHANGELOG.md
+++ b/packages/kas/CHANGELOG.md
@@ -1,5 +1,12 @@
 # @khanacademy/kas
 
+## 0.4.11
+
+### Patch Changes
+
+-   Updated dependencies [[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
+    -   @khanacademy/perseus-core@3.2.0
+
 ## 0.4.10
 
 ### Patch Changes
diff --git a/packages/kas/package.json b/packages/kas/package.json
index bbf0bce3bb..72af2aa704 100644
--- a/packages/kas/package.json
+++ b/packages/kas/package.json
@@ -3,7 +3,7 @@
     "description": "A lightweight JavaScript CAS for comparing expressions and equations.",
     "author": "Khan Academy",
     "license": "MIT",
-    "version": "0.4.10",
+    "version": "0.4.11",
     "publishConfig": {
         "access": "public"
     },
@@ -27,7 +27,7 @@
         "test": "bash -c 'yarn --silent --cwd \"../..\" test ${@:0} $($([[ ${@: -1} = -* ]] || [[ ${@: -1} = bash ]]) && echo $PWD)'"
     },
     "dependencies": {
-        "@khanacademy/perseus-core": "3.1.0"
+        "@khanacademy/perseus-core": "3.2.0"
     },
     "devDependencies": {
         "jison": "0.4.15",
diff --git a/packages/keypad-context/CHANGELOG.md b/packages/keypad-context/CHANGELOG.md
index ce69e2b0d1..2a476fd5a1 100644
--- a/packages/keypad-context/CHANGELOG.md
+++ b/packages/keypad-context/CHANGELOG.md
@@ -1,5 +1,12 @@
 # @khanacademy/keypad-context
 
+## 1.0.14
+
+### Patch Changes
+
+-   Updated dependencies [[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
+    -   @khanacademy/perseus-core@3.2.0
+
 ## 1.0.13
 
 ### Patch Changes
diff --git a/packages/keypad-context/package.json b/packages/keypad-context/package.json
index 2f06c7e2cb..df8d228ff2 100644
--- a/packages/keypad-context/package.json
+++ b/packages/keypad-context/package.json
@@ -3,7 +3,7 @@
     "description": "Perseus keypad context",
     "author": "Khan Academy",
     "license": "MIT",
-    "version": "1.0.13",
+    "version": "1.0.14",
     "publishConfig": {
         "access": "public"
     },
@@ -26,7 +26,7 @@
         "test": "bash -c 'yarn --silent --cwd \"../..\" test ${@:0} $($([[ ${@: -1} = -* ]] || [[ ${@: -1} = bash ]]) && echo $PWD)'"
     },
     "dependencies": {
-        "@khanacademy/perseus-core": "3.1.0"
+        "@khanacademy/perseus-core": "3.2.0"
     },
     "devDependencies": {
         "react": "^18.2.0"
diff --git a/packages/kmath/CHANGELOG.md b/packages/kmath/CHANGELOG.md
index d4e8896519..ee88dce1fd 100644
--- a/packages/kmath/CHANGELOG.md
+++ b/packages/kmath/CHANGELOG.md
@@ -1,5 +1,16 @@
 # @khanacademy/kmath
 
+## 0.3.0
+
+### Minor Changes
+
+-   [#2101](https://github.com/Khan/perseus/pull/2101) [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae) Thanks [@handeyeco](https://github.com/handeyeco)! - Move scorers and validators to `perseus-score`
+
+### Patch Changes
+
+-   Updated dependencies [[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
+    -   @khanacademy/perseus-core@3.2.0
+
 ## 0.2.0
 
 ### Minor Changes
diff --git a/packages/kmath/package.json b/packages/kmath/package.json
index e679294f02..effae8860b 100644
--- a/packages/kmath/package.json
+++ b/packages/kmath/package.json
@@ -3,7 +3,7 @@
     "description": "Khan Academy's Javascript Numeric Math Utilities",
     "author": "Khan Academy",
     "license": "MIT",
-    "version": "0.2.0",
+    "version": "0.3.0",
     "publishConfig": {
         "access": "public"
     },
@@ -25,7 +25,7 @@
         "test": "bash -c 'yarn --silent --cwd \"../..\" test ${@:0} $($([[ ${@: -1} = -* ]] || [[ ${@: -1} = bash ]]) && echo $PWD)'"
     },
     "dependencies": {
-        "@khanacademy/perseus-core": "3.1.0"
+        "@khanacademy/perseus-core": "3.2.0"
     },
     "devDependencies": {
         "perseus-build-settings": "^0.4.3",
diff --git a/packages/math-input/CHANGELOG.md b/packages/math-input/CHANGELOG.md
index 57006885dc..8961176c42 100644
--- a/packages/math-input/CHANGELOG.md
+++ b/packages/math-input/CHANGELOG.md
@@ -1,5 +1,17 @@
 # @khanacademy/math-input
 
+## 22.2.1
+
+### Patch Changes
+
+-   [#2101](https://github.com/Khan/perseus/pull/2101) [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae) Thanks [@handeyeco](https://github.com/handeyeco)! - Move scorers and validators to `perseus-score`
+
+*   [#2109](https://github.com/Khan/perseus/pull/2109) [`41ffd4a71`](https://github.com/Khan/perseus/commit/41ffd4a71673399657d7024c206af4fa4e0be267) Thanks [@dependabot](https://github.com/apps/dependabot)! - Updating our wonder-blocks packages with the latest versions.
+
+*   Updated dependencies [[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
+    -   @khanacademy/perseus-core@3.2.0
+    -   @khanacademy/keypad-context@1.0.14
+
 ## 22.2.0
 
 ### Minor Changes
diff --git a/packages/math-input/package.json b/packages/math-input/package.json
index cb344aea8c..d212e52a37 100644
--- a/packages/math-input/package.json
+++ b/packages/math-input/package.json
@@ -3,7 +3,7 @@
     "description": "Khan Academy's new expression editor for the mobile web.",
     "author": "Khan Academy",
     "license": "MIT",
-    "version": "22.2.0",
+    "version": "22.2.1",
     "publishConfig": {
         "access": "public"
     },
@@ -40,8 +40,8 @@
         "prepublishOnly": "../../utils/package-pre-publish-check.sh"
     },
     "dependencies": {
-        "@khanacademy/keypad-context": "^1.0.13",
-        "@khanacademy/perseus-core": "3.1.0",
+        "@khanacademy/keypad-context": "^1.0.14",
+        "@khanacademy/perseus-core": "3.2.0",
         "mathquill": "https://github.com/Khan/mathquill/releases/download/v1.0.0/mathquill-v1.0.0.tgz"
     },
     "devDependencies": {
diff --git a/packages/perseus-core/CHANGELOG.md b/packages/perseus-core/CHANGELOG.md
index b0b569715c..1cdb0c25a3 100644
--- a/packages/perseus-core/CHANGELOG.md
+++ b/packages/perseus-core/CHANGELOG.md
@@ -1,5 +1,11 @@
 # @khanacademy/perseus-core
 
+## 3.2.0
+
+### Minor Changes
+
+-   [#2101](https://github.com/Khan/perseus/pull/2101) [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae) Thanks [@handeyeco](https://github.com/handeyeco)! - Move scorers and validators to `perseus-score`
+
 ## 3.1.0
 
 ### Minor Changes
diff --git a/packages/perseus-core/package.json b/packages/perseus-core/package.json
index ec4d9a1d67..00c61a8ceb 100644
--- a/packages/perseus-core/package.json
+++ b/packages/perseus-core/package.json
@@ -3,7 +3,7 @@
     "description": "Shared Perseus infrastructure",
     "author": "Khan Academy",
     "license": "MIT",
-    "version": "3.1.0",
+    "version": "3.2.0",
     "publishConfig": {
         "access": "public"
     },
diff --git a/packages/perseus-editor/CHANGELOG.md b/packages/perseus-editor/CHANGELOG.md
index d13f5b558e..d5124e3bab 100644
--- a/packages/perseus-editor/CHANGELOG.md
+++ b/packages/perseus-editor/CHANGELOG.md
@@ -1,5 +1,25 @@
 # @khanacademy/perseus-editor
 
+## 17.3.1
+
+### Patch Changes
+
+-   [#2101](https://github.com/Khan/perseus/pull/2101) [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae) Thanks [@handeyeco](https://github.com/handeyeco)! - Move scorers and validators to `perseus-score`
+
+*   [#2126](https://github.com/Khan/perseus/pull/2126) [`518b005f2`](https://github.com/Khan/perseus/commit/518b005f2b0b9a173dec6526a7b5c808062fe144) Thanks [@benchristel](https://github.com/benchristel)! - Fix a React warning about non-unique component keys in the exercise editor.
+
+-   [#2109](https://github.com/Khan/perseus/pull/2109) [`41ffd4a71`](https://github.com/Khan/perseus/commit/41ffd4a71673399657d7024c206af4fa4e0be267) Thanks [@dependabot](https://github.com/apps/dependabot)! - Updating our wonder-blocks packages with the latest versions.
+
+-   Updated dependencies [[`165305e11`](https://github.com/Khan/perseus/commit/165305e11c5ba196e1a2a9c4fd814d387d34dc55), [`6f2813cfc`](https://github.com/Khan/perseus/commit/6f2813cfcb6bce063d8f0f8f66219ce0123aac66), [`faccc2d59`](https://github.com/Khan/perseus/commit/faccc2d5959a4a7051720f7a3dfe4a4875b6ace9), [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae), [`d96821e08`](https://github.com/Khan/perseus/commit/d96821e08b3f80eb0a277882f4a8a40330b27adc), [`0f8d11c0b`](https://github.com/Khan/perseus/commit/0f8d11c0b8c00a10eb49f2d84b664803c5c83f3f), [`41ffd4a71`](https://github.com/Khan/perseus/commit/41ffd4a71673399657d7024c206af4fa4e0be267)]:
+    -   @khanacademy/perseus@51.0.0
+    -   @khanacademy/kmath@0.3.0
+    -   @khanacademy/perseus-core@3.2.0
+    -   @khanacademy/perseus-score@1.1.0
+    -   @khanacademy/math-input@22.2.1
+    -   @khanacademy/kas@0.4.11
+    -   @khanacademy/keypad-context@1.0.14
+    -   @khanacademy/pure-markdown@0.3.22
+
 ## 17.3.0
 
 ### Minor Changes
diff --git a/packages/perseus-editor/package.json b/packages/perseus-editor/package.json
index 5f2eee2c6f..5043a6bce4 100644
--- a/packages/perseus-editor/package.json
+++ b/packages/perseus-editor/package.json
@@ -3,7 +3,7 @@
     "description": "Perseus editors",
     "author": "Khan Academy",
     "license": "MIT",
-    "version": "17.3.0",
+    "version": "17.3.1",
     "publishConfig": {
         "access": "public"
     },
@@ -35,18 +35,18 @@
         "test": "bash -c 'yarn --silent --cwd \"../..\" test ${@:0} $($([[ ${@: -1} = -* ]] || [[ ${@: -1} = bash ]]) && echo $PWD)'"
     },
     "dependencies": {
-        "@khanacademy/kas": "^0.4.10",
-        "@khanacademy/keypad-context": "^1.0.13",
-        "@khanacademy/kmath": "^0.2.0",
-        "@khanacademy/math-input": "^22.2.0",
-        "@khanacademy/perseus": "^50.1.0",
-        "@khanacademy/perseus-core": "3.1.0",
-        "@khanacademy/perseus-score": "^1.0.0",
-        "@khanacademy/pure-markdown": "^0.3.21",
+        "@khanacademy/kas": "^0.4.11",
+        "@khanacademy/keypad-context": "^1.0.14",
+        "@khanacademy/kmath": "^0.3.0",
+        "@khanacademy/math-input": "^22.2.1",
+        "@khanacademy/perseus": "^51.0.0",
+        "@khanacademy/perseus-core": "3.2.0",
+        "@khanacademy/perseus-score": "^1.1.0",
+        "@khanacademy/pure-markdown": "^0.3.22",
         "mafs": "^0.19.0"
     },
     "devDependencies": {
-        "@khanacademy/perseus-linter": "^1.2.12",
+        "@khanacademy/perseus-linter": "^1.2.13",
         "@khanacademy/wonder-blocks-accordion": "3.0.3",
         "@khanacademy/wonder-blocks-banner": "4.0.5",
         "@khanacademy/wonder-blocks-button": "7.0.5",
diff --git a/packages/perseus-linter/CHANGELOG.md b/packages/perseus-linter/CHANGELOG.md
index 540bc6bb60..1d710ccc87 100644
--- a/packages/perseus-linter/CHANGELOG.md
+++ b/packages/perseus-linter/CHANGELOG.md
@@ -1,5 +1,12 @@
 # @khanacademy/perseus-linter
 
+## 1.2.13
+
+### Patch Changes
+
+-   Updated dependencies [[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
+    -   @khanacademy/perseus-core@3.2.0
+
 ## 1.2.12
 
 ### Patch Changes
diff --git a/packages/perseus-linter/package.json b/packages/perseus-linter/package.json
index 681177996b..5547b26a24 100644
--- a/packages/perseus-linter/package.json
+++ b/packages/perseus-linter/package.json
@@ -3,7 +3,7 @@
     "description": "Linter engine for Perseus",
     "author": "Khan Academy",
     "license": "MIT",
-    "version": "1.2.12",
+    "version": "1.2.13",
     "publishConfig": {
         "access": "public"
     },
@@ -26,10 +26,10 @@
         "test": "bash -c 'yarn --silent --cwd \"../..\" test ${@:0} $($([[ ${@: -1} = -* ]] || [[ ${@: -1} = bash ]]) && echo $PWD)'"
     },
     "dependencies": {
-        "@khanacademy/perseus-core": "3.1.0"
+        "@khanacademy/perseus-core": "3.2.0"
     },
     "devDependencies": {
-        "@khanacademy/pure-markdown": "^0.3.21",
+        "@khanacademy/pure-markdown": "^0.3.22",
         "prop-types": "15.6.1"
     },
     "peerDependencies": {
diff --git a/packages/perseus-score/CHANGELOG.md b/packages/perseus-score/CHANGELOG.md
index 34acf55490..6b8ef3a724 100644
--- a/packages/perseus-score/CHANGELOG.md
+++ b/packages/perseus-score/CHANGELOG.md
@@ -1,5 +1,18 @@
 # @khanacademy/perseus-score
 
+## 1.1.0
+
+### Minor Changes
+
+-   [#2101](https://github.com/Khan/perseus/pull/2101) [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae) Thanks [@handeyeco](https://github.com/handeyeco)! - Move scorers and validators to `perseus-score`
+
+### Patch Changes
+
+-   Updated dependencies [[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
+    -   @khanacademy/kmath@0.3.0
+    -   @khanacademy/perseus-core@3.2.0
+    -   @khanacademy/kas@0.4.11
+
 ## 1.0.0
 
 ### Major Changes
diff --git a/packages/perseus-score/package.json b/packages/perseus-score/package.json
index 72fcbed38d..3abc3c5f0b 100644
--- a/packages/perseus-score/package.json
+++ b/packages/perseus-score/package.json
@@ -3,7 +3,7 @@
     "description": "Perseus score",
     "author": "Khan Academy",
     "license": "MIT",
-    "version": "1.0.0",
+    "version": "1.1.0",
     "publishConfig": {
         "access": "public"
     },
@@ -26,9 +26,9 @@
         "test": "bash -c 'yarn --silent --cwd \"../..\" test ${@:0} $($([[ ${@: -1} = -* ]] || [[ ${@: -1} = bash ]]) && echo $PWD)'"
     },
     "dependencies": {
-        "@khanacademy/kas": "^0.4.10",
-        "@khanacademy/kmath": "^0.2.0",
-        "@khanacademy/perseus-core": "3.1.0"
+        "@khanacademy/kas": "^0.4.11",
+        "@khanacademy/kmath": "^0.3.0",
+        "@khanacademy/perseus-core": "3.2.0"
     },
     "devDependencies": {},
     "peerDependencies": {},
diff --git a/packages/perseus/CHANGELOG.md b/packages/perseus/CHANGELOG.md
index da1eb63325..01f360d617 100644
--- a/packages/perseus/CHANGELOG.md
+++ b/packages/perseus/CHANGELOG.md
@@ -1,5 +1,38 @@
 # @khanacademy/perseus
 
+## 51.0.0
+
+### Major Changes
+
+-   [#2101](https://github.com/Khan/perseus/pull/2101) [`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae) Thanks [@handeyeco](https://github.com/handeyeco)! - Move scorers and validators to `perseus-score`
+
+### Minor Changes
+
+-   [#2127](https://github.com/Khan/perseus/pull/2127) [`6f2813cfc`](https://github.com/Khan/perseus/commit/6f2813cfcb6bce063d8f0f8f66219ce0123aac66) Thanks [@benchristel](https://github.com/benchristel)! - Avoid adding undefined values to objects parsed from Perseus JSON when properties are missing.
+
+### Patch Changes
+
+-   [#2130](https://github.com/Khan/perseus/pull/2130) [`165305e11`](https://github.com/Khan/perseus/commit/165305e11c5ba196e1a2a9c4fd814d387d34dc55) Thanks [@jeremywiebe](https://github.com/jeremywiebe)! - Change interactive-graph visual regression stories to Storybook's CSF v3
+
+*   [#2077](https://github.com/Khan/perseus/pull/2077) [`faccc2d59`](https://github.com/Khan/perseus/commit/faccc2d5959a4a7051720f7a3dfe4a4875b6ace9) Thanks [@benchristel](https://github.com/benchristel)! - Internal: Enable the exhaustive test tool for parsePerseusItem to test articles.
+
+-   [#2030](https://github.com/Khan/perseus/pull/2030) [`d96821e08`](https://github.com/Khan/perseus/commit/d96821e08b3f80eb0a277882f4a8a40330b27adc) Thanks [@nishasy](https://github.com/nishasy)! - [SR] Linear System - add screen reader support for Linear System interactive graph
+
+*   [#2036](https://github.com/Khan/perseus/pull/2036) [`0f8d11c0b`](https://github.com/Khan/perseus/commit/0f8d11c0b8c00a10eb49f2d84b664803c5c83f3f) Thanks [@nishasy](https://github.com/nishasy)! - [SR] Ray graph - Add screen reader support for Ray interactive graph
+
+-   [#2109](https://github.com/Khan/perseus/pull/2109) [`41ffd4a71`](https://github.com/Khan/perseus/commit/41ffd4a71673399657d7024c206af4fa4e0be267) Thanks [@dependabot](https://github.com/apps/dependabot)! - Updating our wonder-blocks packages with the latest versions.
+
+-   Updated dependencies [[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae), [`41ffd4a71`](https://github.com/Khan/perseus/commit/41ffd4a71673399657d7024c206af4fa4e0be267)]:
+    -   @khanacademy/kmath@0.3.0
+    -   @khanacademy/perseus-core@3.2.0
+    -   @khanacademy/perseus-score@1.1.0
+    -   @khanacademy/math-input@22.2.1
+    -   @khanacademy/kas@0.4.11
+    -   @khanacademy/keypad-context@1.0.14
+    -   @khanacademy/perseus-linter@1.2.13
+    -   @khanacademy/pure-markdown@0.3.22
+    -   @khanacademy/simple-markdown@0.13.15
+
 ## 50.1.0
 
 ### Minor Changes
diff --git a/packages/perseus/package.json b/packages/perseus/package.json
index bd63970ba6..8c66b30393 100644
--- a/packages/perseus/package.json
+++ b/packages/perseus/package.json
@@ -3,7 +3,7 @@
     "description": "Core Perseus API (includes renderers and widgets)",
     "author": "Khan Academy",
     "license": "MIT",
-    "version": "50.1.0",
+    "version": "51.0.0",
     "publishConfig": {
         "access": "public"
     },
@@ -41,15 +41,15 @@
         "test": "bash -c 'yarn --silent --cwd \"../..\" test ${@:0} $($([[ ${@: -1} = -* ]] || [[ ${@: -1} = bash ]]) && echo $PWD)'"
     },
     "dependencies": {
-        "@khanacademy/kas": "^0.4.10",
-        "@khanacademy/keypad-context": "^1.0.13",
-        "@khanacademy/kmath": "^0.2.0",
-        "@khanacademy/math-input": "^22.2.0",
-        "@khanacademy/perseus-core": "3.1.0",
-        "@khanacademy/perseus-linter": "^1.2.12",
-        "@khanacademy/perseus-score": "^1.0.0",
-        "@khanacademy/pure-markdown": "^0.3.21",
-        "@khanacademy/simple-markdown": "^0.13.14",
+        "@khanacademy/kas": "^0.4.11",
+        "@khanacademy/keypad-context": "^1.0.14",
+        "@khanacademy/kmath": "^0.3.0",
+        "@khanacademy/math-input": "^22.2.1",
+        "@khanacademy/perseus-core": "3.2.0",
+        "@khanacademy/perseus-linter": "^1.2.13",
+        "@khanacademy/perseus-score": "^1.1.0",
+        "@khanacademy/pure-markdown": "^0.3.22",
+        "@khanacademy/simple-markdown": "^0.13.15",
         "@types/classnames": "2.2.0",
         "@use-gesture/react": "^10.2.27",
         "mafs": "0.19.0",
diff --git a/packages/pure-markdown/CHANGELOG.md b/packages/pure-markdown/CHANGELOG.md
index cdc3945dbd..191e148e88 100644
--- a/packages/pure-markdown/CHANGELOG.md
+++ b/packages/pure-markdown/CHANGELOG.md
@@ -1,5 +1,13 @@
 # @khanacademy/pure-markdown
 
+## 0.3.22
+
+### Patch Changes
+
+-   Updated dependencies [[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
+    -   @khanacademy/perseus-core@3.2.0
+    -   @khanacademy/simple-markdown@0.13.15
+
 ## 0.3.21
 
 ### Patch Changes
diff --git a/packages/pure-markdown/package.json b/packages/pure-markdown/package.json
index 3be4acac84..d09d1b3f9b 100644
--- a/packages/pure-markdown/package.json
+++ b/packages/pure-markdown/package.json
@@ -3,7 +3,7 @@
     "description": "SimpleMarkdown instance with non-react Perseus rules",
     "author": "Khan Academy",
     "license": "MIT",
-    "version": "0.3.21",
+    "version": "0.3.22",
     "publishConfig": {
         "access": "public"
     },
@@ -26,8 +26,8 @@
         "test": "bash -c 'yarn --silent --cwd \"../..\" test ${@:0} $($([[ ${@: -1} = -* ]] || [[ ${@: -1} = bash ]]) && echo $PWD)'"
     },
     "dependencies": {
-        "@khanacademy/perseus-core": "3.1.0",
-        "@khanacademy/simple-markdown": "^0.13.14"
+        "@khanacademy/perseus-core": "3.2.0",
+        "@khanacademy/simple-markdown": "^0.13.15"
     },
     "devDependencies": {},
     "peerDependencies": {},
diff --git a/packages/simple-markdown/CHANGELOG.md b/packages/simple-markdown/CHANGELOG.md
index 014f7af6e1..76842ec4d3 100644
--- a/packages/simple-markdown/CHANGELOG.md
+++ b/packages/simple-markdown/CHANGELOG.md
@@ -1,5 +1,12 @@
 # @khanacademy/simple-markdown
 
+## 0.13.15
+
+### Patch Changes
+
+-   Updated dependencies [[`9cabe689a`](https://github.com/Khan/perseus/commit/9cabe689a7aa143f95adf4556bf5c10d654a66ae)]:
+    -   @khanacademy/perseus-core@3.2.0
+
 ## 0.13.14
 
 ### Patch Changes
diff --git a/packages/simple-markdown/package.json b/packages/simple-markdown/package.json
index a55bb23db9..8581b1f0b6 100644
--- a/packages/simple-markdown/package.json
+++ b/packages/simple-markdown/package.json
@@ -3,7 +3,7 @@
     "description": "Javascript markdown parsing, made simple",
     "author": "Khan Academy",
     "license": "MIT",
-    "version": "0.13.14",
+    "version": "0.13.15",
     "publishConfig": {
         "access": "public"
     },
@@ -26,7 +26,7 @@
         "test": "bash -c 'yarn --silent --cwd \"../..\" test ${@:0} $($([[ ${@: -1} = -* ]] || [[ ${@: -1} = bash ]]) && echo $PWD)'"
     },
     "dependencies": {
-        "@khanacademy/perseus-core": "3.1.0"
+        "@khanacademy/perseus-core": "3.2.0"
     },
     "devDependencies": {
         "perseus-build-settings": "^0.4.3"

From cb15921b8bdfd850c40610b4df5c9919a668a2a1 Mon Sep 17 00:00:00 2001
From: Jeremy Wiebe <jeremy@khanacademy.org>
Date: Mon, 20 Jan 2025 16:55:06 -0800
Subject: [PATCH 09/10] =?UTF-8?q?[=F0=9F=94=A5AUDIT=F0=9F=94=A5]=20Align?=
 =?UTF-8?q?=20variable=20names=20in=20SR=20strings=20for=20interactive=20g?=
 =?UTF-8?q?raph=20(#2131)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

🖍 _This is an audit!_ 🖍

## Summary:

Our localization infrastructure requires that the names of the placeholders in the `strings` variable (the object with the English strings) matches the variable names in the same-named string generator function that appears in the `PerseusStrings` type.

This PR fixes two new strings so that their placeholder variable names match: `srRayEndpoint` and `srRayTerminalPoint`.

Issue: "none"

## Test plan:

Do another release and integrate it again and rerun the localization script.

Author: jeremywiebe

Auditors: jeremywiebe, #perseus, nishasy

Required Reviewers:

Approved By:

Checks: ✅ Check for .changeset entries for all changed files (ubuntu-latest, 20.x), ✅ Publish npm snapshot (ubuntu-latest, 20.x), ✅ Lint, Typecheck, Format, and Test (ubuntu-latest, 20.x), ✅ Cypress (ubuntu-latest, 20.x), ✅ Check builds for changes in size (ubuntu-latest, 20.x), ✅ Publish Storybook to Chromatic (ubuntu-latest, 20.x)

Pull Request URL: https://github.com/Khan/perseus/pull/2131
---
 .changeset/friendly-tables-confess.md | 5 +++++
 packages/perseus/src/strings.ts       | 4 ++--
 2 files changed, 7 insertions(+), 2 deletions(-)
 create mode 100644 .changeset/friendly-tables-confess.md

diff --git a/.changeset/friendly-tables-confess.md b/.changeset/friendly-tables-confess.md
new file mode 100644
index 0000000000..4c0aa7861e
--- /dev/null
+++ b/.changeset/friendly-tables-confess.md
@@ -0,0 +1,5 @@
+---
+"@khanacademy/perseus": patch
+---
+
+Fix localized string templates for two the ray interactive graph type
diff --git a/packages/perseus/src/strings.ts b/packages/perseus/src/strings.ts
index d593fa2aa2..cfe30d3d43 100644
--- a/packages/perseus/src/strings.ts
+++ b/packages/perseus/src/strings.ts
@@ -535,8 +535,8 @@ export const strings = {
         "The endpoint is at %(point1X)s comma %(point1Y)s and the ray goes through point %(point2X)s comma %(point2Y)s.",
     srRayGrabHandle:
         "Ray with endpoint %(point1X)s comma %(point1Y)s going through point %(point2X)s comma %(point2Y)s.",
-    srRayEndpoint: "Endpoint at %(point1X)s comma %(point1Y)s.",
-    srRayTerminalPoint: "Through point at %(point2X)s comma %(point2Y)s.",
+    srRayEndpoint: "Endpoint at %(x)s comma %(y)s.",
+    srRayTerminalPoint: "Through point at %(x)s comma %(y)s.",
     // The above strings are used for interactive graph SR descriptions.
 } satisfies {
     [key in keyof PerseusStrings]:

From 93eb5a0be7d9519c990dd224e6c4296118f5c7f3 Mon Sep 17 00:00:00 2001
From: Khan Actions Bot <56267880+khan-actions-bot@users.noreply.github.com>
Date: Mon, 20 Jan 2025 20:12:46 -0500
Subject: [PATCH 10/10] Version Packages (#2132)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated.


# Releases
## @khanacademy/perseus@51.0.1

### Patch Changes

-   [#2131](https://github.com/Khan/perseus/pull/2131) [`cb15921b8`](https://github.com/Khan/perseus/commit/cb15921b8bdfd850c40610b4df5c9919a668a2a1) Thanks [@jeremywiebe](https://github.com/jeremywiebe)! - Fix localized string templates for two the ray interactive graph type

## @khanacademy/perseus-editor@17.3.2

### Patch Changes

-   Updated dependencies \[[`cb15921b8`](https://github.com/Khan/perseus/commit/cb15921b8bdfd850c40610b4df5c9919a668a2a1)]:
    -   @khanacademy/perseus@51.0.1

Author: khan-actions-bot

Reviewers: jeremywiebe

Required Reviewers:

Approved By: jeremywiebe

Checks: ⏭️  Publish npm snapshot, ✅ Check for .changeset entries for all changed files (ubuntu-latest, 20.x), ✅ Cypress (ubuntu-latest, 20.x), ✅ Check builds for changes in size (ubuntu-latest, 20.x), ✅ Lint, Typecheck, Format, and Test (ubuntu-latest, 20.x), ✅ Publish Storybook to Chromatic (ubuntu-latest, 20.x)

Pull Request URL: https://github.com/Khan/perseus/pull/2132
---
 .changeset/friendly-tables-confess.md | 5 -----
 packages/perseus-editor/CHANGELOG.md  | 7 +++++++
 packages/perseus-editor/package.json  | 4 ++--
 packages/perseus/CHANGELOG.md         | 6 ++++++
 packages/perseus/package.json         | 2 +-
 5 files changed, 16 insertions(+), 8 deletions(-)
 delete mode 100644 .changeset/friendly-tables-confess.md

diff --git a/.changeset/friendly-tables-confess.md b/.changeset/friendly-tables-confess.md
deleted file mode 100644
index 4c0aa7861e..0000000000
--- a/.changeset/friendly-tables-confess.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@khanacademy/perseus": patch
----
-
-Fix localized string templates for two the ray interactive graph type
diff --git a/packages/perseus-editor/CHANGELOG.md b/packages/perseus-editor/CHANGELOG.md
index d5124e3bab..4f05ea785d 100644
--- a/packages/perseus-editor/CHANGELOG.md
+++ b/packages/perseus-editor/CHANGELOG.md
@@ -1,5 +1,12 @@
 # @khanacademy/perseus-editor
 
+## 17.3.2
+
+### Patch Changes
+
+-   Updated dependencies [[`cb15921b8`](https://github.com/Khan/perseus/commit/cb15921b8bdfd850c40610b4df5c9919a668a2a1)]:
+    -   @khanacademy/perseus@51.0.1
+
 ## 17.3.1
 
 ### Patch Changes
diff --git a/packages/perseus-editor/package.json b/packages/perseus-editor/package.json
index 5043a6bce4..3d09bac212 100644
--- a/packages/perseus-editor/package.json
+++ b/packages/perseus-editor/package.json
@@ -3,7 +3,7 @@
     "description": "Perseus editors",
     "author": "Khan Academy",
     "license": "MIT",
-    "version": "17.3.1",
+    "version": "17.3.2",
     "publishConfig": {
         "access": "public"
     },
@@ -39,7 +39,7 @@
         "@khanacademy/keypad-context": "^1.0.14",
         "@khanacademy/kmath": "^0.3.0",
         "@khanacademy/math-input": "^22.2.1",
-        "@khanacademy/perseus": "^51.0.0",
+        "@khanacademy/perseus": "^51.0.1",
         "@khanacademy/perseus-core": "3.2.0",
         "@khanacademy/perseus-score": "^1.1.0",
         "@khanacademy/pure-markdown": "^0.3.22",
diff --git a/packages/perseus/CHANGELOG.md b/packages/perseus/CHANGELOG.md
index 01f360d617..fecc07020f 100644
--- a/packages/perseus/CHANGELOG.md
+++ b/packages/perseus/CHANGELOG.md
@@ -1,5 +1,11 @@
 # @khanacademy/perseus
 
+## 51.0.1
+
+### Patch Changes
+
+-   [#2131](https://github.com/Khan/perseus/pull/2131) [`cb15921b8`](https://github.com/Khan/perseus/commit/cb15921b8bdfd850c40610b4df5c9919a668a2a1) Thanks [@jeremywiebe](https://github.com/jeremywiebe)! - Fix localized string templates for two the ray interactive graph type
+
 ## 51.0.0
 
 ### Major Changes
diff --git a/packages/perseus/package.json b/packages/perseus/package.json
index 8c66b30393..c4938b9a7c 100644
--- a/packages/perseus/package.json
+++ b/packages/perseus/package.json
@@ -3,7 +3,7 @@
     "description": "Core Perseus API (includes renderers and widgets)",
     "author": "Khan Academy",
     "license": "MIT",
-    "version": "51.0.0",
+    "version": "51.0.1",
     "publishConfig": {
         "access": "public"
     },