form 1 topics added

app/lessons/layout.tsx

@@ -1,7 +1,6 @@
 import { Header } from "@/components/layout/header";
 import { Footer } from "@/components/layout/footer";
-import { Sidebar } from "@/components/layout/sidebar";
-import { MobileNav } from "@/components/layout/mobile-nav";
+import { LessonsShell } from "@/components/layout/lessons-shell";
 
 export default function LessonsLayout({
   children,
@@ -11,17 +10,7 @@ export default function LessonsLayout({
   return (
     <div className="playground-bg flex min-h-screen flex-col">
       <Header />
-      <div className="playground-frame relative mx-auto flex w-full max-w-6xl flex-1">
-        <Sidebar />
-        <main className="flex-1 bg-white">
-          <div className="relative p-4 lg:hidden">
-            <MobileNav />
-          </div>
-          <div className="mx-auto max-w-4xl px-4 py-8 sm:px-6 lg:px-8">
-            {children}
-          </div>
-        </main>
-      </div>
+      <LessonsShell>{children}</LessonsShell>
       <Footer />
     </div>
   );

app/lessons/unit-5-integers/negative-fractions/page.tsx

@@ -0,0 +1,22 @@
+"use client";
+
+import { Breadcrumbs } from "@/components/layout/breadcrumbs";
+import { NegativeFractionsExplorer } from "@/components/explorers/negative-fractions-explorer";
+
+export default function NegativeFractionsPage() {
+  return (
+    <div className="space-y-8">
+      <Breadcrumbs
+        items={[
+          { label: "Lessons", href: "/lessons" },
+          { label: "Unit 5: Integers", href: "/lessons/unit-5-integers" },
+          { label: "Negative Fractions" },
+        ]}
+      />
+
+      <h1 className="text-3xl font-bold tracking-tight">Negative Fractions</h1>
+
+      <NegativeFractionsExplorer />
+    </div>
+  );
+}

app/lessons/unit-5-integers/order-compare/page.tsx

@@ -0,0 +1,22 @@
+"use client";
+
+import { Breadcrumbs } from "@/components/layout/breadcrumbs";
+import { IntegerOrderCompareExplorer } from "@/components/explorers/integer-order-compare-explorer";
+
+export default function IntegerOrderComparePage() {
+  return (
+    <div className="space-y-8">
+      <Breadcrumbs
+        items={[
+          { label: "Lessons", href: "/lessons" },
+          { label: "Unit 5: Integers", href: "/lessons/unit-5-integers" },
+          { label: "Order & Compare" },
+        ]}
+      />
+
+      <h1 className="text-3xl font-bold tracking-tight">Order and Compare Integers</h1>
+
+      <IntegerOrderCompareExplorer />
+    </div>
+  );
+}

app/lessons/unit-6-number-system/place-value/page.tsx

@@ -0,0 +1,22 @@
+"use client";
+
+import { Breadcrumbs } from "@/components/layout/breadcrumbs";
+import { PlaceValueExplorer } from "@/components/explorers/place-value-explorer";
+
+export default function PlaceValuePage() {
+  return (
+    <div className="space-y-8">
+      <Breadcrumbs
+        items={[
+          { label: "Lessons", href: "/lessons" },
+          { label: "Unit 6: Number System", href: "/lessons/unit-6-number-system" },
+          { label: "Place Value" },
+        ]}
+      />
+
+      <h1 className="text-3xl font-bold tracking-tight">Denary Place Value (Base 10)</h1>
+
+      <PlaceValueExplorer />
+    </div>
+  );
+}

app/lessons/unit-7-coordinates/page.tsx

@@ -0,0 +1,40 @@
+import Link from "next/link";
+import { curriculum } from "@/lib/curriculum";
+import { Card } from "@/components/ui/card";
+import { Badge } from "@/components/ui/badge";
+import { Breadcrumbs } from "@/components/layout/breadcrumbs";
+
+export default function Unit7Overview() {
+  const unit = curriculum[6];
+
+  return (
+    <div>
+      <Breadcrumbs
+        items={[
+          { label: "Lessons", href: "/lessons" },
+          { label: `Unit 7: ${unit.title}` },
+        ]}
+      />
+      <div className="mb-10">
+        <Badge variant="unit-7" className="mb-3">Unit 7</Badge>
+        <h1 className="mb-2 text-3xl font-bold tracking-tight">{unit.title}</h1>
+        <p className="text-muted leading-relaxed">{unit.description}</p>
+      </div>
+      <div className="grid gap-4 sm:grid-cols-2">
+        {unit.topics.map((topic, i) => (
+          <Link key={topic.slug} href={`/lessons/${unit.slug}/${topic.slug}`}>
+            <Card accent="unit-7" hover className="group h-full">
+              <div className="mb-2 flex items-center gap-2">
+                <span className="flex h-7 w-7 items-center justify-center rounded-lg bg-unit-7-light text-xs font-bold text-unit-7-dark shadow-[var(--shadow-sm)]">
+                  {i + 1}
+                </span>
+              </div>
+              <h3 className="mb-1 font-semibold">{topic.title}</h3>
+              <p className="text-sm leading-relaxed text-muted">{topic.description}</p>
+            </Card>
+          </Link>
+        ))}
+      </div>
+    </div>
+  );
+}

app/lessons/unit-7-coordinates/plot-points/page.tsx

@@ -0,0 +1,22 @@
+"use client";
+
+import { Breadcrumbs } from "@/components/layout/breadcrumbs";
+import { PlotPointsExplorer } from "@/components/explorers/plot-points-explorer";
+
+export default function PlotPointsPage() {
+  return (
+    <div className="space-y-8">
+      <Breadcrumbs
+        items={[
+          { label: "Lessons", href: "/lessons" },
+          { label: "Unit 7: Coordinates", href: "/lessons/unit-7-coordinates" },
+          { label: "Plot Points" },
+        ]}
+      />
+
+      <h1 className="text-3xl font-bold tracking-tight">Plot Points on the Cartesian Plane</h1>
+
+      <PlotPointsExplorer />
+    </div>
+  );
+}

app/lessons/unit-7-coordinates/read-coordinates/page.tsx

@@ -0,0 +1,22 @@
+"use client";
+
+import { Breadcrumbs } from "@/components/layout/breadcrumbs";
+import { ReadCoordinatesExplorer } from "@/components/explorers/read-coordinates-explorer";
+
+export default function ReadCoordinatesPage() {
+  return (
+    <div className="space-y-8">
+      <Breadcrumbs
+        items={[
+          { label: "Lessons", href: "/lessons" },
+          { label: "Unit 7: Coordinates", href: "/lessons/unit-7-coordinates" },
+          { label: "Read Coordinates" },
+        ]}
+      />
+
+      <h1 className="text-3xl font-bold tracking-tight">State Coordinates of Points</h1>
+
+      <ReadCoordinatesExplorer />
+    </div>
+  );
+}

app/lessons/unit-8-number-properties/exponents/page.tsx

@@ -0,0 +1,22 @@
+"use client";
+
+import { Breadcrumbs } from "@/components/layout/breadcrumbs";
+import { ExponentsExplorer } from "@/components/explorers/exponents-explorer";
+
+export default function ExponentsPage() {
+  return (
+    <div className="space-y-8">
+      <Breadcrumbs
+        items={[
+          { label: "Lessons", href: "/lessons" },
+          { label: "Unit 8: Number Properties", href: "/lessons/unit-8-number-properties" },
+          { label: "Exponents" },
+        ]}
+      />
+
+      <h1 className="text-3xl font-bold tracking-tight">Powers and Exponents</h1>
+
+      <ExponentsExplorer />
+    </div>
+  );
+}

app/lessons/unit-8-number-properties/identity-inverse/page.tsx

@@ -0,0 +1,22 @@
+"use client";
+
+import { Breadcrumbs } from "@/components/layout/breadcrumbs";
+import { IdentityInverseExplorer } from "@/components/explorers/identity-inverse-explorer";
+
+export default function IdentityInversePage() {
+  return (
+    <div className="space-y-8">
+      <Breadcrumbs
+        items={[
+          { label: "Lessons", href: "/lessons" },
+          { label: "Unit 8: Number Properties", href: "/lessons/unit-8-number-properties" },
+          { label: "Identity & Inverse" },
+        ]}
+      />
+
+      <h1 className="text-3xl font-bold tracking-tight">Identity and Inverse</h1>
+
+      <IdentityInverseExplorer />
+    </div>
+  );
+}

app/lessons/unit-8-number-properties/number-laws/page.tsx

@@ -0,0 +1,22 @@
+"use client";
+
+import { Breadcrumbs } from "@/components/layout/breadcrumbs";
+import { NumberLawsExplorer } from "@/components/explorers/number-laws-explorer";
+
+export default function NumberLawsPage() {
+  return (
+    <div className="space-y-8">
+      <Breadcrumbs
+        items={[
+          { label: "Lessons", href: "/lessons" },
+          { label: "Unit 8: Number Properties", href: "/lessons/unit-8-number-properties" },
+          { label: "Number Laws" },
+        ]}
+      />
+
+      <h1 className="text-3xl font-bold tracking-tight">Commutative, Associative and Distributive Laws</h1>
+
+      <NumberLawsExplorer />
+    </div>
+  );
+}

app/lessons/unit-8-number-properties/page.tsx

@@ -0,0 +1,40 @@
+import Link from "next/link";
+import { curriculum } from "@/lib/curriculum";
+import { Card } from "@/components/ui/card";
+import { Badge } from "@/components/ui/badge";
+import { Breadcrumbs } from "@/components/layout/breadcrumbs";
+
+export default function Unit8Overview() {
+  const unit = curriculum[7];
+
+  return (
+    <div>
+      <Breadcrumbs
+        items={[
+          { label: "Lessons", href: "/lessons" },
+          { label: `Unit 8: ${unit.title}` },
+        ]}
+      />
+      <div className="mb-10">
+        <Badge variant="unit-8" className="mb-3">Unit 8</Badge>
+        <h1 className="mb-2 text-3xl font-bold tracking-tight">{unit.title}</h1>
+        <p className="text-muted leading-relaxed">{unit.description}</p>
+      </div>
+      <div className="grid gap-4 sm:grid-cols-2">
+        {unit.topics.map((topic, i) => (
+          <Link key={topic.slug} href={`/lessons/${unit.slug}/${topic.slug}`}>
+            <Card accent="unit-8" hover className="group h-full">
+              <div className="mb-2 flex items-center gap-2">
+                <span className="flex h-7 w-7 items-center justify-center rounded-lg bg-unit-8-light text-xs font-bold text-unit-8-dark shadow-[var(--shadow-sm)]">
+                  {i + 1}
+                </span>
+              </div>
+              <h3 className="mb-1 font-semibold">{topic.title}</h3>
+              <p className="text-sm leading-relaxed text-muted">{topic.description}</p>
+            </Card>
+          </Link>
+        ))}
+      </div>
+    </div>
+  );
+}