diff --git a/.changeset/olive-shoes-cross.md b/.changeset/olive-shoes-cross.md
new file mode 100644
index 0000000000..31de7987b2
--- /dev/null
+++ b/.changeset/olive-shoes-cross.md
@@ -0,0 +1,5 @@
+---
+"@khanacademy/perseus": minor
+---
+
+add aria labels for sinusoid function graphs
diff --git a/packages/perseus/src/strings.ts b/packages/perseus/src/strings.ts
index cfe30d3d43..12b0066fd0 100644
--- a/packages/perseus/src/strings.ts
+++ b/packages/perseus/src/strings.ts
@@ -310,6 +310,9 @@ export type PerseusStrings = {
         point2X: string;
         point2Y: string;
     }) => string;
+    srSinusoidGraphAriaLabel: string;
+    srSinusoidExtremumPoint: ({x, y}: {x: string; y: string}) => string;
+    srSinusoidMidlineIntersection: ({x, y}: {x: string; y: string}) => string;
     // The above strings are used for interactive graph SR descriptions.
 };
 
@@ -537,6 +540,9 @@ export const strings = {
         "Ray with endpoint %(point1X)s comma %(point1Y)s going through point %(point2X)s comma %(point2Y)s.",
     srRayEndpoint: "Endpoint at %(x)s comma %(y)s.",
     srRayTerminalPoint: "Through point at %(x)s comma %(y)s.",
+    srSinusoidGraphAriaLabel: "A sinusoid function on a coordinate plane.",
+    srSinusoidExtremumPoint: "Extremum Point at %(x)s comma %(y)s.",
+    srSinusoidMidlineIntersection: "Midline Intersection at %(x)s comma %(y)s.",
     // The above strings are used for interactive graph SR descriptions.
 } satisfies {
     [key in keyof PerseusStrings]:
@@ -771,6 +777,10 @@ export const mockStrings: PerseusStrings = {
         `Ray with endpoint ${point1X} comma ${point1Y} going through point ${point2X} comma ${point2Y}.`,
     srRayEndpoint: ({x, y}) => `Endpoint at ${x} comma ${y}.`,
     srRayTerminalPoint: ({x, y}) => `Through point at ${x} comma ${y}.`,
+    srSinusoidGraphAriaLabel: "A sinusoid function on a coordinate plane.",
+    srSinusoidExtremumPoint: ({x, y}) => `Extremum Point at ${x} comma ${y}.`,
+    srSinusoidMidlineIntersection: ({x, y}) =>
+        `Midline Intersection at ${x} comma ${y}.`,
     // The above strings are used for interactive graph SR descriptions.
 };
 
diff --git a/packages/perseus/src/widgets/interactive-graphs/graphs/sinusoid.tsx b/packages/perseus/src/widgets/interactive-graphs/graphs/sinusoid.tsx
index 974eda7b24..3f00a781ff 100644
--- a/packages/perseus/src/widgets/interactive-graphs/graphs/sinusoid.tsx
+++ b/packages/perseus/src/widgets/interactive-graphs/graphs/sinusoid.tsx
@@ -1,11 +1,13 @@
 import {color} from "@khanacademy/wonder-blocks-tokens";
-import {Plot} from "mafs";
+import {Plot, type vec} from "mafs";
 import * as React from "react";
 
-import {X, Y} from "../math/coordinates";
+import {usePerseusI18n} from "../../../components/i18n-context";
+import {X, Y} from "../math";
 import {actions} from "../reducer/interactive-graph-action";
 
 import {MovablePoint} from "./components/movable-point";
+import {srFormatNumber} from "./screenreader-text";
 
 import type {
     SinusoidGraphState,
@@ -53,8 +55,36 @@ function SinusoidGraph(props: SinusoidGraphProps) {
         coeffRef.current = coeffs;
     }
 
+    const {strings, locale} = usePerseusI18n();
+
+    function getMoveablePointAriaLabel(
+        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: convertedXCoordinate,
+            y: srFormatNumber(y, locale),
+        };
+
+        return index === 1
+            ? strings.srSinusoidExtremumPoint(coordsObj)
+            : strings.srSinusoidMidlineIntersection(coordsObj);
+    }
+
     return (
-        <>
+        <g aria-label={strings.srSinusoidGraphAriaLabel}>
             <Plot.OfX
                 y={(x) => computeSine(x, coeffRef.current)}
                 color={color.blue}
@@ -62,6 +92,7 @@ function SinusoidGraph(props: SinusoidGraphProps) {
             {coords.map((coord, i) => (
                 <MovablePoint
                     key={"point-" + i}
+                    ariaLabel={getMoveablePointAriaLabel(i, coord)}
                     point={coord}
                     sequenceNumber={i + 1}
                     onMove={(destination) =>
@@ -69,7 +100,7 @@ function SinusoidGraph(props: SinusoidGraphProps) {
                     }
                 />
             ))}
-        </>
+        </g>
     );
 }
 
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 0f3ecfbe69..97765b97a6 100644
--- a/packages/perseus/src/widgets/interactive-graphs/mafs-graph.test.tsx
+++ b/packages/perseus/src/widgets/interactive-graphs/mafs-graph.test.tsx
@@ -359,8 +359,8 @@ describe("MafsGraph", () => {
             />,
         );
 
-        expectLabelInDoc("Point 1 at -1 comma 1");
-        expectLabelInDoc("Point 2 at 0 comma 0");
+        expectLabelInDoc("Midline Intersection at -1/2 pi comma 1.");
+        expectLabelInDoc("Extremum Point at 0 comma 0.");
     });
 
     it("renders ARIA labels for each point (point)", () => {