391 lines
15 KiB
TypeScript
391 lines
15 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 ContextEliminationWidget, {
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type VocabExercise,
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} from "../../../components/lessons/ContextEliminationWidget";
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import { PracticeFromDataset } from "../../../components/lessons/LessonShell";
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import {
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WORDS_CONTEXT_EASY,
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WORDS_CONTEXT_MEDIUM,
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} from "../../../data/rw/words-in-context";
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interface LessonProps {
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onFinish?: () => void;
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}
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const EBRWVocabMeaningLesson: 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 = (i: number) => {
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setActiveSection(i);
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sectionsRef.current[i]?.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-rose-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 ${isActive ? "bg-rose-600 text-white" : isPast ? "bg-rose-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-rose-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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const VOCAB_EXERCISES: VocabExercise[] = [
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{
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sentence:
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"The critic's review was pointed, cutting directly to the weaknesses of the performance without any diplomatic softening.",
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word: "pointed",
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question: "As used in this sentence, 'pointed' most nearly means:",
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options: [
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{
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id: "A",
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definition: "having a sharp physical tip",
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isCorrect: false,
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elimReason:
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"This is the literal, physical meaning. In a review context, 'pointed' describes the directness of criticism, not a physical shape.",
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},
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{
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id: "B",
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definition: "deliberately directed and sharply critical",
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isCorrect: true,
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elimReason:
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"Correct — 'pointed' here means incisively critical and direct. The phrase 'cutting directly to the weaknesses' confirms the metaphorical sharpness of the critique.",
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},
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{
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id: "C",
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definition: "polite and professionally worded",
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isCorrect: false,
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elimReason:
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"Opposite — the sentence says 'without diplomatic softening,' meaning the review was NOT polite. Eliminate on opposite-meaning grounds.",
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},
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{
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id: "D",
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definition: "carefully structured and well-organized",
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isCorrect: false,
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elimReason:
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"The sentence emphasizes directness and impact, not organization. 'Pointed' is about force, not structure.",
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},
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],
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},
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{
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sentence:
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"The administration's new policy represented a marked departure from the approach taken by its predecessor.",
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word: "marked",
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question: "As used in this sentence, 'marked' most nearly means:",
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options: [
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{
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id: "A",
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definition: "labeled or indicated with a visible sign",
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isCorrect: false,
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elimReason:
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"Physical marking meaning. Here 'marked departure' is an idiom meaning notable/significant departure — no literal label is involved.",
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},
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{
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id: "B",
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definition: "slight and barely noticeable",
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isCorrect: false,
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elimReason:
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"Opposite connotation — 'marked' as an adjective before a noun means striking or significant, the opposite of slight.",
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},
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{
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id: "C",
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definition: "clearly noticeable and significant",
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isCorrect: true,
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elimReason:
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"Correct — 'a marked departure' means a clearly noticeable, significant change. This is the standard idiomatic meaning of 'marked' as an adjective.",
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},
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{
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id: "D",
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definition: "controversial and widely debated",
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isCorrect: false,
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elimReason:
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"The sentence says nothing about controversy — it only describes how different the policy is. 'Marked' means notable, not controversial.",
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},
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],
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},
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{
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sentence:
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"Despite the economic pressures, the nonprofit remained committed to its founding mission, refusing to compromise its principles.",
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word: "compromise",
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question: "As used in this sentence, 'compromise' most nearly means:",
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options: [
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{
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id: "A",
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definition: "reach a mutual agreement through negotiation",
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isCorrect: false,
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elimReason:
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"This is the common meaning of 'compromise' as a noun/verb in negotiations. Here it's used differently — to weaken or undermine.",
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},
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{
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id: "B",
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definition: "weaken or undermine",
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isCorrect: true,
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elimReason:
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"Correct — 'compromise its principles' means to weaken or betray them. This is the secondary meaning of 'compromise' as a verb: to expose to risk or damage.",
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},
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{
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id: "C",
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definition: "publicly disclose or reveal",
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isCorrect: false,
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elimReason:
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"This meaning applies to 'compromise' in security contexts (e.g., 'compromised data'). Here the context is about integrity, not disclosure.",
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},
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{
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id: "D",
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definition: "renegotiate or redefine",
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isCorrect: false,
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elimReason:
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"'Refusing to compromise' means refusing to weaken principles, not refusing to redefine them. Too specific and misses the core meaning.",
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},
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],
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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 lg:bg-transparent z-0 hidden lg:block">
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<nav className="space-y-2 pt-6">
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<SectionMarker
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index={0}
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title="Word Meaning Strategy"
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icon={BookOpen}
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/>
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<SectionMarker
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index={1}
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title="Context Elimination"
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icon={AlertTriangle}
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/>
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<SectionMarker index={2} title="Practice Quiz" 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: Word Meaning Strategy */}
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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-rose-100 text-rose-700 px-3 py-1 rounded-full text-xs font-bold uppercase tracking-wider mb-4">
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Vocabulary in Context
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</div>
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<h2 className="text-4xl font-extrabold text-slate-900 mb-2">
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Word Meaning Strategy
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</h2>
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<p className="text-lg text-slate-500 mb-8">
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A word can have many meanings. "Most nearly means" asks which
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meaning fits THIS sentence. Context, not the dictionary, is the
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judge.
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</p>
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<div className="bg-rose-50 border border-rose-200 rounded-2xl p-6 mb-6 space-y-4">
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<h3 className="text-lg font-bold text-rose-900">
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Four Essential Rules
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</h3>
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<div className="space-y-3">
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<div className="bg-white rounded-xl p-3 border border-rose-100">
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<p className="text-xs font-bold text-rose-700 mb-1">
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1. 'Most Nearly Means'
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</p>
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<p className="text-xs text-slate-600">
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This question type asks for the word's meaning IN THIS
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CONTEXT, not its general definition. The same word can have
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different meanings in different sentences.
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</p>
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</div>
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<div className="bg-white rounded-xl p-3 border border-rose-100">
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<p className="text-xs font-bold text-rose-700 mb-1">
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2. Substitute Test
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</p>
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<p className="text-xs text-slate-600">
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Insert each answer choice into the sentence in place of the
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word. The correct answer will sound natural and preserve the
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sentence's meaning.
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</p>
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</div>
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<div className="bg-white rounded-xl p-3 border border-rose-100">
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<p className="text-xs font-bold text-rose-700 mb-1">
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3. Watch for Secondary Meanings
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</p>
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<p className="text-xs text-slate-600">
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The SAT deliberately picks words that have a common meaning
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AND a rarer contextual meaning. The correct answer is usually
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the less obvious one.
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</p>
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</div>
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<div className="bg-white rounded-xl p-3 border border-rose-100">
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<p className="text-xs font-bold text-rose-700 mb-1">
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4. Tone and Connotation
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</p>
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<p className="text-xs text-slate-600">
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Even if a word is technically correct, wrong connotation =
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wrong answer. 'Famous' and 'notorious' both mean well-known,
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but 'notorious' has negative connotation.
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</p>
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</div>
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</div>
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</div>
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<div className="space-y-3 mb-6">
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<div className="bg-rose-100 rounded-xl p-4 border border-rose-200">
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<p className="text-sm text-slate-800 italic">
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"The scientist's findings were met with considerable reservation
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by her peers."
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</p>
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</div>
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<div className="bg-green-100 rounded-xl p-4 border border-green-200">
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<p className="text-sm text-slate-800">
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<span className="font-bold text-green-800">
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'Reservation' here = doubt/skepticism.
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</span>{" "}
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Not a place to stay — context overrides the common meaning.
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</p>
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</div>
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<div className="bg-orange-100 rounded-xl p-4 border border-orange-200">
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<p className="text-sm text-slate-800">
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<span className="font-bold text-orange-800">
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Wrong choice trap:
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</span>{" "}
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'hesitation' — close but 'reservation' implies more sustained
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doubt, not momentary pause.
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</p>
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</div>
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</div>
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<div className="bg-red-50 border border-red-200 rounded-xl p-4 mb-6">
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<p className="text-sm font-bold text-red-800 mb-1">
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The 'most nearly means' trap
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</p>
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<p className="text-sm text-slate-700">
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The SAT picks the most common meaning of the word as a wrong
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answer choice. Always check if the common meaning fits the
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sentence — if it feels wrong in context, look for the rarer
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contextual meaning.
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</p>
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</div>
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<div className="bg-rose-900 rounded-2xl p-5 mb-8">
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<p className="text-sm font-bold text-rose-100 mb-1">Golden Rule</p>
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<p className="text-sm text-white">
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The correct answer substitutes naturally into the sentence without
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changing the author's intended meaning. Test each choice by
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reading the full sentence aloud.
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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-4 group flex items-center text-rose-600 font-bold hover:text-rose-800 transition-colors"
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>
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Next: Context Elimination{" "}
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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: Context Elimination */}
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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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<div className="inline-flex items-center gap-2 bg-rose-100 text-rose-700 px-3 py-1 rounded-full text-xs font-bold uppercase tracking-wider mb-4">
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Interactive Practice
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</div>
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<h2 className="text-4xl font-extrabold text-slate-900 mb-2">
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Context Elimination
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</h2>
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<p className="text-lg text-slate-500 mb-8">
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For each question below, read the sentence and use context clues to
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eliminate wrong choices — then select the best meaning.
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</p>
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<ContextEliminationWidget
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exercises={VOCAB_EXERCISES}
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accentColor="rose"
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/>
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<button
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onClick={() => scrollToSection(2)}
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className="mt-12 group flex items-center text-rose-600 font-bold hover:text-rose-800 transition-colors"
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>
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Next: Practice Quiz{" "}
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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: Practice 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 Quiz
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</h2>
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{WORDS_CONTEXT_EASY.slice(2, 4).map((q) => (
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<PracticeFromDataset key={q.id} question={q} color="fuchsia" />
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))}
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{WORDS_CONTEXT_MEDIUM.slice(1, 2).map((q) => (
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<PracticeFromDataset key={q.id} question={q} color="fuchsia" />
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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-rose-900 text-white font-bold rounded-full hover:bg-rose-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 EBRWVocabMeaningLesson;
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