Math Animation

How it works

Make a 3Blue1Brown math animation for any proof, formula or concept: a calm, narrated explainer where equations morph, graphs draw themselves and the picture comes before the formula.

You bring the idea you want to explain, and optionally notes, a textbook page, a script or your own voice recording. Your agent narrows it down to the one sentence the viewer should believe at the end.

It plans the picture that proves it, then writes the narration as short lines, one beat of animation each. The voice comes from your recording or Kokoro, a free voice that runs on your computer.

Each scene is built in Manim, the open-source library 3Blue1Brown's Grant Sanderson wrote, from a starter project with the palette, helpers and narration timing already set up. Every object appears or moves as it's named, and earlier steps dim instead of vanishing. If you want, the key frame of each scene opens in FrameJam as a storyboard first.

A script renders every scene at 1080p60, joins them, places each line on its cue and mixes the audio. That's the whole 3Blue1Brown math animation pipeline, and it has nothing to do with beats or lyrics like the music video playbooks.

The video opens in FrameJam. Your agent maps each comment to its scene, re-renders only the scenes you touched and sends the next version until you're done.

The example

The video at the top shows the odd numbers adding up to squares: the sums 1, 1+3, 1+3+5 and 1+3+5+7 equal 1, 4, 9 and 16, then each odd number becomes a row of dots that wraps around a growing square. It's the same idea as the starter project's own example, "Why odd numbers add up to squares". The player at the top also has versions in Blueprint and Soft Outline, made with this playbook.

Example prompts

With FrameJam installed, paste one of these into Claude, ChatGPT or Cursor and change the details to yours.

Questions