TEL 500 · Interventions · Pedagogical Suite
The English Lab 500
Known in short as TEL 500 — four adaptive diagnostic engines designed to systematically eliminate linguistic blindspots through active production, copy-editor markup feedback, and spaced memory recovery across 2,000 curated items.
500 Words
TEL 500 · Module 01 · Lexicon
GRE 500 — Adaptive Vocabulary Trainer
A rigorous flashcard and diagnostic engine built to master high-frequency GRE traps. Features phonetic transcription, nuanced definitions, and a strict retirement rule: answer correctly 5 times in a row and the word retires permanently.
500 Traps
TEL 500 · Module 02 · Syntax
Preposition Drill 500 — Adaptive Mastery Engine
Dismantles chronic preposition errors across three graded difficulty tiers. Features proofreader red-ink strike-throughs, multi-variant sentence acceptance, dynamic sentence rotation in error fixing, and printable PDF worksheets.
500 Verbs
TEL 500 · Module 03 · Particles
Phrasal Verbs 500 — Meaning, Particle & MCQ Trainer
Internalize 500 vital multi-word verbs across four frequency tiers. Features three rotating test faces (meaning recall, particle gap-fill in sentence context, and confusable 4-option MCQs) with spaced error recovery at 3, 10, and 30 days.
500 Idioms
TEL 500 · Module 04 · Idioms
Idioms 500 — Meaning, Gap-fill & MCQ Trainer
Master 500 high-yield English idioms through contextual clozes, definition recall, and confusable options across four frequency tiers. Built with active recall to eliminate passive familiarity and cement genuine conversational competence.
Pedagogical Architecture
Why these tools work: they reject passive recognition in favor of enforced cognitive retrieval and systematic error recovery.
Active Production
Recognition is not mastery. Each tool requires either direct typing or commitment before revealing the answer, breaking the illusion of competence caused by multiple-choice guessing.
Sentence Variation
When you miss an item, the error-recovery loop rotates through alternative sentences testing the identical phrase. You learn the underlying syntactic pattern, not a static flashcard.
3 · 10 · 30d Spaced Rechecks
Graduating an item to the "Fixed" list is not the end. Items return for mandatory typed rechecks at 3, 10, and 30-day intervals to verify that short-term recall has consolidated into long-term memory.
Offline-First & Client-Side
All engines run 100% locally in your browser with zero external server dependencies. Progress persists in localStorage, and error logs can be exported directly as printable 2-page PDF worksheets.