feat(lessons): add lessons from client db
This commit is contained in:
shafin-r
424
src/pages/student/lessons/EBRWSubjectVerbLesson.tsx
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424
src/pages/student/lessons/EBRWSubjectVerbLesson.tsx
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import React, { useRef, useState, useEffect } from "react";
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import { ArrowDown, Check, BookOpen, AlertTriangle, Zap } from "lucide-react";
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import { PracticeFromDataset } from "../../../components/lessons/LessonShell";
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import {
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FORM_STRUCTURE_EASY,
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FORM_STRUCTURE_MEDIUM,
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} from "../../../data/rw/form-structure-sense";
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import ClauseBreakdownWidget, {
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type ClauseExample,
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} from "../../../components/lessons/ClauseBreakdownWidget";
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import DecisionTreeWidget, {
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type TreeScenario,
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type TreeNode,
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} from "../../../components/lessons/DecisionTreeWidget";
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interface LessonProps {
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onFinish?: () => void;
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}
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// ── Clause Breakdown data ──────────────────────────────────────────────────
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const CLAUSE_EXAMPLES: ClauseExample[] = [
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{
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title: "Prepositional Phrase Trap",
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segments: [
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{
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text: "The results",
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type: "subject",
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label: "True Subject: 'results' (plural)",
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},
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{
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text: " of the study",
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type: "modifier",
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label: "Prepositional Phrase — ignore for agreement",
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},
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{ text: " were", type: "verb", label: "Plural Verb ✓" },
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{ text: " significant", type: "ic", label: "" },
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{ text: ".", type: "punct" },
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],
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},
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{
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title: "Collective Noun — Singular",
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segments: [
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{
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text: "The committee",
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type: "subject",
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label: "Collective Noun — singular",
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},
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{ text: " has", type: "verb", label: "Singular Verb ✓" },
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{ text: " reached", type: "verb", label: "" },
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{ text: " a decision", type: "ic", label: "" },
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{ text: ".", type: "punct" },
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],
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},
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{
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title: "Inverted Sentence",
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segments: [
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{
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text: "Among the findings",
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type: "modifier",
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label: "Introductory Phrase — not the subject",
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},
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{
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text: " was",
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type: "verb",
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label: "Singular Verb — matches 'one key result'",
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},
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{
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text: " one key result",
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type: "subject",
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label: "True Subject: singular",
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},
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{ text: ".", type: "punct" },
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],
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},
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];
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// ── Decision Tree data ─────────────────────────────────────────────────────
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const SUBJECT_VERB_TREE: TreeNode = {
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id: "root",
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question: "What is the TRUE grammatical subject of the sentence?",
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hint: "Strip away all prepositional phrases (of, in, with, by...), relative clauses, and modifiers. What's left is your true subject.",
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yesLabel: "I found it — it's singular",
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noLabel: "I found it — it's plural",
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yes: {
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id: "singular-subject",
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question:
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"Is the subject a collective noun (team, committee, group, class, family) acting as one unit?",
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yesLabel: "Yes — collective noun",
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noLabel: "No — regular singular noun",
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yes: {
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id: "collective-singular",
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result:
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'✓ Use a SINGULAR verb. Collective nouns acting as a single unit take singular verbs: "The committee has decided."',
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resultType: "correct",
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ruleRef: "[Collective noun] + singular verb (has, was, decides)",
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},
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no: {
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id: "regular-singular",
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question:
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"Is the subject an indefinite pronoun (everyone, each, either, neither, anyone, someone)?",
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yesLabel: "Yes — indefinite pronoun",
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noLabel: "No — regular noun",
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yes: {
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id: "indefinite-singular",
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result:
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"✓ Use a SINGULAR verb. Most indefinite pronouns (everyone, each, either, neither) are grammatically singular.",
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resultType: "correct",
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ruleRef: "Everyone/Each/Either → singular verb",
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},
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no: {
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id: "regular-noun-singular",
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result: "✓ Use a SINGULAR verb: is, was, has, does, -s ending verbs.",
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resultType: "correct",
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ruleRef: "[Singular noun] + singular verb",
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},
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},
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},
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no: {
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id: "plural-subject",
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question: "Is the subject a compound subject joined by 'and'?",
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yesLabel: "Yes — X and Y (compound)",
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noLabel: "No — regular plural",
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yes: {
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id: "compound-and",
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result:
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'✓ Use a PLURAL verb. "X and Y" joined with "and" is always plural: "The teacher and the student are ready."',
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resultType: "correct",
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ruleRef: "[Noun] and [noun] + plural verb",
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},
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no: {
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id: "regular-plural",
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question: "Is the subject joined by 'or' or 'nor'?",
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yesLabel: "Yes — X or/nor Y",
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noLabel: "No — just a regular plural noun",
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yes: {
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id: "or-nor",
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result:
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"⚠ 'Or/Nor' rule: the verb agrees with the CLOSER subject. \"Neither the students nor the teacher IS ready\" (IS agrees with 'teacher', the closer one).",
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resultType: "warning",
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ruleRef: "Neither A nor [B] + verb matching B (the closer subject)",
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},
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no: {
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id: "plain-plural",
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result: "✓ Use a PLURAL verb: are, were, have, do, -s removed.",
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resultType: "correct",
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ruleRef: "[Plural noun] + plural verb",
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},
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},
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},
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};
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const TREE_SCENARIOS: TreeScenario[] = [
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{
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label: "Sentence 1",
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sentence:
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"The committee of senior researchers have decided to delay the publication.",
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tree: SUBJECT_VERB_TREE,
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},
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{
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label: "Sentence 2",
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sentence:
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"Neither the students nor the professor were prepared for the final exam.",
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tree: SUBJECT_VERB_TREE,
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},
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{
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label: "Sentence 3",
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sentence:
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"Among the most important discoveries of the decade was two breakthrough treatments.",
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tree: SUBJECT_VERB_TREE,
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},
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];
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// ── Lesson component ───────────────────────────────────────────────────────
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const EBRWSubjectVerbLesson: React.FC<LessonProps> = ({ onFinish }) => {
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const [activeSection, setActiveSection] = useState(0);
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const sectionsRef = useRef<(HTMLElement | null)[]>([]);
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useEffect(() => {
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const observers: IntersectionObserver[] = [];
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sectionsRef.current.forEach((el, idx) => {
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if (!el) return;
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const obs = new IntersectionObserver(
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([entry]) => {
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if (entry.isIntersecting) setActiveSection(idx);
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},
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{ threshold: 0.3 },
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);
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obs.observe(el);
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observers.push(obs);
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});
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return () => observers.forEach((o) => o.disconnect());
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}, []);
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const scrollToSection = (index: number) => {
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setActiveSection(index);
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sectionsRef.current[index]?.scrollIntoView({ behavior: "smooth" });
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};
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const SectionMarker = ({
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index,
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title,
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icon: Icon,
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}: {
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index: number;
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title: string;
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icon: React.ElementType;
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}) => {
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const isActive = activeSection === index;
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const isPast = activeSection > index;
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return (
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<button
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onClick={() => scrollToSection(index)}
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className={`flex items-center gap-3 p-3 w-full rounded-lg text-left transition-all ${isActive ? "bg-purple-50" : "hover:bg-slate-50"}`}
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>
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<div
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className={`w-8 h-8 rounded-full flex items-center justify-center shrink-0
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${isActive ? "bg-purple-600 text-white" : isPast ? "bg-purple-400 text-white" : "bg-slate-200 text-slate-500"}`}
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>
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{isPast ? (
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<Check className="w-4 h-4" />
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) : (
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<Icon className="w-4 h-4" />
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)}
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</div>
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<p
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className={`text-sm font-bold ${isActive ? "text-purple-900" : "text-slate-600"}`}
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>
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{title}
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</p>
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</button>
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);
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};
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return (
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<div className="flex flex-col lg:flex-row min-h-screen">
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<aside className="w-full lg:w-64 lg:fixed lg:top-14 lg:bottom-0 lg:overflow-y-auto p-4 border-r border-slate-200 bg-slate-50 z-0 hidden lg:block">
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<nav className="space-y-2 pt-6">
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<SectionMarker index={0} title="Agreement Anatomy" icon={BookOpen} />
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<SectionMarker
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index={1}
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title="Decision Tree Lab"
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icon={AlertTriangle}
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/>
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<SectionMarker index={2} title="Practice Questions" icon={Zap} />
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</nav>
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</aside>
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<div className="flex-1 lg:ml-64 p-6 md:p-12 max-w-4xl mx-auto">
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{/* Section 0 — Concept + Clause Breakdown */}
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<section
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ref={(el) => {
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sectionsRef.current[0] = el;
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}}
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className="min-h-screen flex flex-col justify-center mb-24 pt-20 lg:pt-0"
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>
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<div className="inline-flex items-center gap-2 bg-purple-100 text-purple-700 px-3 py-1 rounded-full text-xs font-bold uppercase tracking-wider mb-4 w-fit">
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Standard English Conventions
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</div>
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<h2 className="text-4xl font-extrabold text-slate-900 mb-2">
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Subject-Verb Agreement
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</h2>
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<p className="text-lg text-slate-500 mb-8">
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See how sentences are built — then learn how to match the verb to
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the true subject.
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</p>
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{/* Rule summary grid */}
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<div className="grid grid-cols-1 sm:grid-cols-2 gap-4 mb-8">
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{[
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{
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num: 1,
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rule: "Strip Prep Phrases",
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desc: 'Ignore "of the X, in the Y" — they hide the true subject. Find the core noun.',
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},
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{
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num: 2,
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rule: "Collective Nouns",
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desc: "team, group, committee, class → singular verb when acting as one unit.",
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},
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{
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num: 3,
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rule: "Indefinite Pronouns",
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desc: "each, every, either, neither, anyone, someone → always singular.",
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},
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{
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num: 4,
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rule: "Or / Nor Rule",
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desc: 'Verb matches the CLOSER subject: "Neither the students nor the teacher IS."',
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},
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].map((r) => (
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<div
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key={r.num}
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className="bg-purple-50 border border-purple-200 rounded-xl p-4"
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>
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<div className="flex items-center gap-2 mb-1">
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<span className="w-6 h-6 rounded-full bg-purple-600 text-white flex items-center justify-center text-xs font-bold shrink-0">
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{r.num}
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</span>
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<span className="font-bold text-purple-900 text-sm">
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{r.rule}
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</span>
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</div>
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<p className="text-xs text-slate-600 ml-8">{r.desc}</p>
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</div>
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))}
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</div>
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{/* Clause Breakdown */}
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<h3 className="text-xl font-bold text-slate-800 mb-3">
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Sentence Anatomy
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</h3>
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<p className="text-sm text-slate-500 mb-4">
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Hover over any colored span to see its label. Use the tabs to switch
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between examples.
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</p>
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<ClauseBreakdownWidget
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examples={CLAUSE_EXAMPLES}
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accentColor="purple"
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/>
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<div className="mt-6 bg-purple-900 text-white rounded-2xl p-5">
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<p className="font-bold mb-1">Golden Rule</p>
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<p className="text-sm text-purple-100">
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The SAT hides subjects behind prepositional phrases and inverted
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sentences. Always identify the true subject first — strip
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modifiers, then match the verb.
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</p>
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</div>
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<button
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onClick={() => scrollToSection(1)}
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className="mt-12 group flex items-center text-purple-600 font-bold hover:text-purple-800 transition-colors"
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>
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Next: Decision Tree Lab{" "}
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<ArrowDown className="ml-2 w-5 h-5 group-hover:translate-y-1 transition-transform" />
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</button>
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</section>
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{/* Section 1 — Decision Tree */}
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<section
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ref={(el) => {
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sectionsRef.current[1] = el;
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}}
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className="min-h-screen flex flex-col justify-center mb-24"
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>
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<h2 className="text-4xl font-extrabold text-slate-900 mb-2">
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Decision Tree Lab
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</h2>
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<p className="text-lg text-slate-500 mb-8">
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Work through the agreement logic one question at a time. Click your
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answer at each step.
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</p>
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{/* Trap callouts */}
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<div className="space-y-3 mb-8">
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{[
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{
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label: "Prepositional Phrase Trap",
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desc: 'The results of the study [was/were]? Strip "of the study"; true subject is "results" (plural) → "were".',
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},
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{
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label: "Or/Nor Proximity Rule",
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desc: '"Neither A nor B" → verb matches B (the noun closer to the verb).',
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},
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{
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label: "Inverted Sentence",
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desc: '"There is/are..." and "Among X was/were Y" — find the true subject after the verb.',
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},
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].map((t) => (
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<div
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key={t.label}
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className="flex gap-3 bg-red-50 border border-red-200 rounded-xl px-4 py-3"
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>
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<AlertTriangle className="w-4 h-4 text-red-500 shrink-0 mt-0.5" />
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<div>
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<p className="text-sm font-bold text-red-800">{t.label}</p>
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<p className="text-xs text-slate-600 mt-0.5">{t.desc}</p>
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</div>
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</div>
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))}
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</div>
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<DecisionTreeWidget scenarios={TREE_SCENARIOS} accentColor="purple" />
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<button
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onClick={() => scrollToSection(2)}
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className="mt-12 group flex items-center text-purple-600 font-bold hover:text-purple-800 transition-colors"
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>
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Next: Practice Questions{" "}
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<ArrowDown className="ml-2 w-5 h-5 group-hover:translate-y-1 transition-transform" />
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</button>
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</section>
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{/* Section 2 — Quiz */}
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<section
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ref={(el) => {
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sectionsRef.current[2] = el;
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}}
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className="min-h-screen flex flex-col justify-center mb-24"
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>
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<h2 className="text-4xl font-extrabold text-slate-900 mb-6">
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Practice Questions
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</h2>
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{FORM_STRUCTURE_EASY.slice(0, 2).map((q) => (
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<PracticeFromDataset key={q.id} question={q} color="purple" />
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))}
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{FORM_STRUCTURE_MEDIUM.slice(0, 1).map((q) => (
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<PracticeFromDataset key={q.id} question={q} color="purple" />
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))}
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<div className="mt-8 text-center">
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<button
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onClick={onFinish}
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className="px-6 py-3 bg-purple-900 text-white font-bold rounded-full hover:bg-purple-700 transition-colors"
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>
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Finish Lesson ✓
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</button>
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</div>
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</section>
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</div>
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</div>
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);
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};
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export default EBRWSubjectVerbLesson;
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