431 lines
16 KiB
TypeScript
431 lines
16 KiB
TypeScript
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: "Pronoun\u2013Antecedent Agreement",
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segments: [
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{ text: "Each student", type: "subject", label: "Antecedent: singular" },
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{ text: " must submit", type: "verb", label: "Verb" },
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{
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text: " their",
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type: "conjunction",
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label: "\u26a0 Incorrect: \u2018their\u2019 is plural",
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},
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{ text: " own assignment", 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: "Who vs. Whom",
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segments: [
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{
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text: "The scientist",
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type: "subject",
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label: "Subject of main clause",
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},
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{
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text: " who",
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type: "conjunction",
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label: "Subject pronoun: \u2018who\u2019 replaces \u2018he/she\u2019",
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},
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{ text: " won the award", type: "ic", label: "Relative clause" },
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{ text: " is my mentor", type: "verb", label: "Main verb" },
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{ text: ".", type: "punct" },
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],
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},
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{
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title: "Pronoun Case: Subject vs. Object",
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segments: [
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{ text: "The award was given to", type: "ic", label: "" },
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{
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text: " her",
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type: "conjunction",
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label:
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"Object pronoun: \u2018her\u2019 after preposition \u2018to\u2019",
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},
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{ text: " and", type: "conjunction", label: "" },
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{
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text: " me",
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type: "conjunction",
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label:
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"Object pronoun: \u2018me\u2019 not \u2018I\u2019 \u2014 object position",
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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 PRONOUN_TREE: TreeNode = {
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id: "root",
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question: "What type of pronoun problem is this?",
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hint: "Is the question about: (1) who/whom, (2) they/it agreement with antecedent, or (3) subject vs. object case (I/me, he/him, she/her)?",
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yesLabel: "who / whom choice",
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noLabel: "Agreement or case question",
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yes: {
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id: "who-whom",
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question:
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"Is the pronoun acting as the SUBJECT of its clause (performing the action)?",
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hint: "Substitute: if 'he/she' fits \u2192 use 'who'. If 'him/her' fits \u2192 use 'whom'. Try: 'The scientist who/whom won\u2026' \u2192 'he won' \u2192 'who'.",
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yesLabel: "Yes \u2014 it's the subject (he/she would fit)",
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noLabel: "No \u2014 it's the object (him/her would fit)",
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yes: {
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id: "use-who",
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result:
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"\u2713 Use 'who' \u2014 it's in subject position (replaces he/she).",
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resultType: "correct",
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ruleRef: "who = he/she | whom = him/her",
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},
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no: {
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id: "use-whom",
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result:
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"\u2713 Use 'whom' \u2014 it's in object position (replaces him/her).",
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resultType: "correct",
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ruleRef: "whom = him/her | 'To whom' = 'To him'",
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},
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},
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no: {
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id: "agreement-or-case",
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question:
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"Does the pronoun need to AGREE with its antecedent (match in number)?",
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hint: "Antecedent = the noun the pronoun refers back to. Example: 'Each student submitted their assignment' \u2014 'their' must match 'each student' (singular).",
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yesLabel: "Yes \u2014 agreement question",
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noLabel: "No \u2014 subject/object case question (I vs. me)",
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yes: {
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id: "agreement",
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question:
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"Is the antecedent singular or an indefinite pronoun (each, every, anyone, someone)?",
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yesLabel: "Yes \u2014 singular or indefinite",
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noLabel: "No \u2014 clearly plural",
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yes: {
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id: "singular-antecedent",
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result:
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"\u26a0 Use a SINGULAR pronoun: 'he or she' / 'his or her'. Indefinite pronouns (each, someone, anyone) require singular pronouns. 'Their' is plural and incorrect here.",
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resultType: "warning",
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ruleRef: "Each student \u2192 his or her (not their)",
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},
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no: {
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id: "plural-antecedent",
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result:
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"\u2713 Use a plural pronoun: they, their, them \u2014 matches the plural antecedent.",
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resultType: "correct",
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ruleRef: "[Plural noun] \u2192 they/their/them",
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},
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},
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no: {
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id: "case",
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question:
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"Is the pronoun in SUBJECT position (before the verb, doing the action)?",
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hint: "Try covering the other person: 'He and I went' \u2192 'I went' \u2713. 'Between he and I' \u2192 'Between I' \u2717 \u2192 use 'me'.",
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yesLabel: "Yes \u2014 it's the subject",
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noLabel: "No \u2014 it's after a preposition or is an object",
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yes: {
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id: "subject-case",
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result: "\u2713 Use subject pronouns: I, he, she, we, they, who.",
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resultType: "correct",
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ruleRef: "Subject: I/he/she/we/they performed the action",
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},
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no: {
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id: "object-case",
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result:
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"\u2713 Use object pronouns: me, him, her, us, them, whom \u2014 after prepositions or as direct/indirect objects.",
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resultType: "correct",
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ruleRef: "Object: gave it to me/him/her/them",
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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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"Each of the students submitted their assignments before the deadline.",
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tree: PRONOUN_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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"The award was presented to Sarah and I at the end of the ceremony.",
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tree: PRONOUN_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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"The professor, who students found inspiring, won the teaching award.",
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tree: PRONOUN_TREE,
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},
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];
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// ── Lesson component ───────────────────────────────────────────────────────
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const EBRWPronounsLesson: 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.ComponentType<React.SVGProps<SVGSVGElement>>;
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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="Pronoun 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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Pronouns & 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 pronoun choices work — then master the rules the SAT tests
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most.
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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: "Who vs. Whom",
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desc: "who = subject (he/she). whom = object (him/her). Test by substituting.",
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},
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{
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num: 2,
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rule: "Pronoun\u2013Antecedent Agreement",
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desc: "Pronoun must match antecedent in number. Each/anyone/someone \u2192 singular.",
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},
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{
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num: 3,
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rule: "Subject Pronouns",
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desc: "I, he, she, we, they, who \u2014 before verbs as subjects.",
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},
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{
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num: 4,
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rule: "Object Pronouns",
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desc: "me, him, her, us, them, whom \u2014 after prepositions or as objects.",
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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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Pronoun 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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{/* Common Traps */}
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<div className="space-y-3 mt-8 mb-6">
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{[
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{
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label: "Each/Every/Anyone \u2192 Singular Pronoun",
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desc: "'Each student submitted their assignment' sounds natural but is wrong. Use 'his or her' for formal SAT writing.",
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},
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{
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label: "I vs. Me After Prepositions",
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desc: "'between you and I' is always wrong. After prepositions, always use object pronouns: me, him, her, us, them.",
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},
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{
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label: "Who vs. Whom \u2014 Substitute Test",
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desc: "Replace who/whom with he/him. If 'he' fits \u2192 who. If 'him' fits \u2192 whom.",
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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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<div className="mt-2 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's most common pronoun traps are 'their' with singular
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antecedents, 'I' after prepositions, and 'who' where 'whom' is
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correct. Test with substitution: he/him for who/whom, 'it is' for
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'it's'.
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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 pronoun 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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<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(2, 4).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(1, 2).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 EBRWPronounsLesson;
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