Grammar Intelligence Lab
Not a list of formulas to memorise — a laboratory. Every topic shows the Formula → Rule → Why → Examples → Common Mistakes → Practice, and six smart tools let a student analyse, break, fix, transform, compare and search grammar instead of just reading about it.
🔍 Sentence Analyzer
Type any sentence — the analyzer tags Subject, Auxiliary, Main Verb, Object, Parts of Speech and Clause type, then names the likely tense and voice.
🚩 Mistake Detector
Enter a sentence you're unsure about. It checks subject–verb agreement, be-verb agreement, double negatives, since/for and a/an — and explains the rule, not just the fix.
🔄 Transformation Lab
Pick a transformation, enter a sentence, and see the result with the rule that produced it.
🧩 Formula Compare
See two similar structures side by side — pick a ready-made pair, or compare any two topics directly.
🧭 Grammar Roadmap
Grammar builds in layers — this is the order that makes each new topic click, not a random list. Tap any chip to open that topic.
✅ Practice Mode
Generate questions from one topic, or a mixed set across all 24 — with instant answers and explanations.
This is a rule-based teaching engine, not an AI guesser — the Sentence Analyzer, Mistake Detector and Transformation Lab are all upfront in the UI when a sentence sits outside what their rules can safely handle. Everything runs in your browser; nothing you type is uploaded.