diff --git a/apps/app/src/widgets/Card.cy.tsx b/apps/app/src/widgets/Card.cy.tsx
new file mode 100644
index 000000000..60a394a37
--- /dev/null
+++ b/apps/app/src/widgets/Card.cy.tsx
@@ -0,0 +1,174 @@
+import { mount } from "cypress/react";
+import { ChakraProvider } from "@chakra-ui/react";
+import { createMemoryRouter, Outlet, RouterProvider } from "react-router";
+import Card, { CardContent } from "./Card";
+import { SiteContext } from "../paths/SiteHeader";
+import { theme } from "../theme";
+
+// Minimal SiteContext for tests
+const mockSiteContext: SiteContext = {
+  user: undefined,
+  exploreTab: null,
+  setExploreTab: () => {},
+  addTo: null,
+  setAddTo: () => {},
+  allLicenses: [],
+  allDoenetmlVersions: [],
+};
+
+// Minimal card content fixture
+const mockCardContent: CardContent = {
+  content: {
+    contentId: "test-id-1234-5678-9012-345678901234",
+    ownerId: "owner-id-1234-5678-9012-345678901234",
+    name: "Test Document",
+    isPublic: false,
+    visibility: "private",
+    isShared: false,
+    sharedWith: [],
+    licenseCode: null,
+    categories: [],
+    classifications: [],
+    parent: null,
+    type: "singleDoc",
+    numVariants: 1,
+    doenetML: "",
+    doenetmlVersion: {
+      id: 1,
+      displayedVersion: "0.7",
+      fullVersion: "0.7.0",
+      default: true,
+      deprecated: false,
+      removed: false,
+      deprecationMessage: "",
+    },
+  },
+};
+
+// Mount Card inside a router that provides the outlet context.
+function mountCard(
+  props: Partial<React.ComponentProps<typeof Card>> & {
+    cardContent?: CardContent;
+  } = {},
+) {
+  const {
+    cardContent = mockCardContent,
+    includeSelectionBox = false,
+    isSelected = false,
+    onSelected,
+    onDeselected,
+    disableSelect = false,
+    disableAsSelected = false,
+    idx = 0,
+  } = props;
+
+  const CardChild = () => (
+    <Card
+      cardContent={cardContent}
+      includeSelectionBox={includeSelectionBox}
+      isSelected={isSelected}
+      onSelected={onSelected}
+      onDeselected={onDeselected}
+      disableSelect={disableSelect}
+      disableAsSelected={disableAsSelected}
+      idx={idx}
+    />
+  );
+
+  const router = createMemoryRouter([
+    {
+      path: "/",
+      element: (
+        <ChakraProvider theme={theme}>
+          <Outlet context={mockSiteContext} />
+        </ChakraProvider>
+      ),
+      children: [{ index: true, element: <CardChild /> }],
+    },
+  ]);
+
+  return mount(<RouterProvider router={router} />);
+}
+
+describe("Card", { tags: ["@group4"] }, () => {
+  describe("selection checkbox", () => {
+    it("does not render checkbox when includeSelectionBox is false", () => {
+      mountCard({ includeSelectionBox: false });
+      cy.get('[data-test="Card Select"]').should("not.exist");
+    });
+
+    it("renders checkbox when includeSelectionBox is true", () => {
+      mountCard({ includeSelectionBox: true });
+      cy.get('[data-test="Card Select"]').should("exist");
+    });
+
+    it("calls onSelected when clicking the checkbox", () => {
+      const onSelected = cy.stub().as("onSelected");
+      mountCard({ includeSelectionBox: true, isSelected: false, onSelected });
+      cy.get('[data-test="Card Select"]').click();
+      cy.get("@onSelected").should("have.been.calledOnce");
+    });
+
+    it("calls onDeselected when clicking a selected checkbox", () => {
+      const onDeselected = cy.stub().as("onDeselected");
+      mountCard({
+        includeSelectionBox: true,
+        isSelected: true,
+        onDeselected,
+      });
+      cy.get('[data-test="Card Select"]').click();
+      cy.get("@onDeselected").should("have.been.calledOnce");
+    });
+
+    it("calls onSelected when clicking above the checkbox in the row", () => {
+      const onSelected = cy.stub().as("onSelected");
+      mountCard({ includeSelectionBox: true, isSelected: false, onSelected });
+
+      // Click the top edge of the row wrapper (above the checkbox square itself)
+      cy.get('[data-test="Content Card"]')
+        .find('[data-test="Card Select"]')
+        .parent() // the Flex wrapper
+        .click("top");
+
+      cy.get("@onSelected").should("have.been.calledOnce");
+    });
+
+    it("calls onSelected when clicking below the checkbox in the row", () => {
+      const onSelected = cy.stub().as("onSelected");
+      mountCard({ includeSelectionBox: true, isSelected: false, onSelected });
+
+      cy.get('[data-test="Content Card"]')
+        .find('[data-test="Card Select"]')
+        .parent() // the Flex wrapper
+        .click("bottom");
+
+      cy.get("@onSelected").should("have.been.calledOnce");
+    });
+
+    it("does not call onSelected when disableSelect is true", () => {
+      const onSelected = cy.stub().as("onSelected");
+      mountCard({
+        includeSelectionBox: true,
+        isSelected: false,
+        onSelected,
+        disableSelect: true,
+      });
+
+      // Clicking the wrapper should not trigger selection
+      cy.get('[data-test="Content Card"]')
+        .find('[data-test="Card Select"]')
+        .parent()
+        .click("top");
+
+      cy.get("@onSelected").should("not.have.been.called");
+    });
+
+    it("uses large checkbox size for better visibility", () => {
+      mountCard({ includeSelectionBox: true });
+      // Chakra size="lg" sets the checkbox control to 20px
+      cy.get('[data-test="Card Select"]')
+        .find(".chakra-checkbox__control")
+        .should("have.css", "width", "20px");
+    });
+  });
+});
diff --git a/apps/app/src/widgets/Card.tsx b/apps/app/src/widgets/Card.tsx
index f6761b07c..577d952f7 100644
--- a/apps/app/src/widgets/Card.tsx
+++ b/apps/app/src/widgets/Card.tsx
@@ -128,22 +128,39 @@ export default function Card({
   const variantsIconHeight = "1.6rem";
   const variantsBadgeWidth = "3.5rem";
 
-  // Select checkbox
+  // Select checkbox — the Flex wrapper extends the click target to the full row
+  // height so that clicking above or below the checkbox still toggles it.
   const selectCheckbox = includeSelectionBox && (
-    <Checkbox
-      data-test="Card Select"
-      margin="5px"
-      isDisabled={disableSelect || disableAsSelected}
-      isChecked={isSelected || disableAsSelected}
-      onChange={(e) => {
-        if (e.target.checked) {
-          onSelected?.();
-        } else {
+    <Flex
+      alignSelf="stretch"
+      alignItems="center"
+      paddingX="8px"
+      cursor={disableSelect || disableAsSelected ? "default" : "pointer"}
+      onClick={() => {
+        if (disableSelect || disableAsSelected) return;
+        if (isSelected) {
           onDeselected?.();
+        } else {
+          onSelected?.();
         }
       }}
-      aria-label={`Select item ${idx + 1}: ${title}`}
-    ></Checkbox>
+    >
+      <Checkbox
+        data-test="Card Select"
+        size="lg"
+        isDisabled={disableSelect || disableAsSelected}
+        isChecked={isSelected || disableAsSelected}
+        onClick={(e) => e.stopPropagation()}
+        onChange={(e) => {
+          if (e.target.checked) {
+            onSelected?.();
+          } else {
+            onDeselected?.();
+          }
+        }}
+        aria-label={`Select item ${idx + 1}: ${title}`}
+      />
+    </Flex>
   );
 
   // Content type icon