form 1 topics added

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

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+"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

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+"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

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+"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

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+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>
+  );
+}