About — Chalklet

Follows your book

Concepts sit in NCERT chapter order, so you can work through a chapter the way you actually study it — not hunt through a playlist.

Pitched at your exam

The same concept, explained three ways. Foundation builds intuition; NEET stays NCERT-accurate; JEE goes after the problem-solving. You pick your track once.

Practise like the real thing

A quick question after each video, plus timed papers that follow the actual NEET and JEE patterns — same marking, negative marking included.

Why we built this

Some ideas land the moment you see them drawn, and refuse to land as a wall of text. A diagram that builds up while someone talks you through it does in ninety seconds what a page of notes does in twenty minutes — and most of the syllabus has no such video at all.

How it works

Every video is animated from the NCERT syllabus and narrated, then checked before it is published. There is no teacher on camera and no lecture hall: just the diagram, built step by step, with an explanation over the top. Videos run about a minute and a half, so a concept is a sitting rather than a session.

Because the narration and the animation are made together, each language gets its own pacing rather than being dubbed over a fixed timeline. If English is not your strongest language, you can pick a second one when you sign up and switch the voice while you watch — the diagram stays put, and formulas stay in English, the way your exam will show them.

Made with AI, checked by people

The explanations, diagrams and questions are generated with AI and reviewed before they reach you. We say so plainly because it is why we can cover a whole syllabus in several languages — and because you should know what you are watching. It also means mistakes are possible: if something contradicts your textbook, trust the textbook and tell us.

What "checked" means

Claims are checked against the book. Statements are verified against the textbook rather than against the model's own confidence — asking a model to mark its own work was tried, measured, and found not to catch its own errors.
Answer keys are re-derived independently. Every question's answer is worked out again by a separate process rather than trusted. This exists because an audit of an earlier batch found roughly one answer key in nine was wrong.
Solutions are checked for invented reasoning. A correct answer can still be supported by a confidently fabricated argument, which is worse than a wrong answer and harder to spot.
A person decides the rest. Anything the automated checks cannot settle goes to a review queue, ordered by how much doubt there is, and is approved or rejected there. A meaningful share is rejected.