Geometry · Algebra · Puzzles

Maths you can
look at

Every topic starts with something you can rotate, drag and break. Then you solve with it — not with a wall of formulas.

Build · Lemu

Lemur assembled ✓

Every topic runs the same three beats

Explainer, problems, puzzle — same rhythm on every topic, so you always know what comes next.

An interactive model you can rotate and slice. Definitions appear on the object, not beside it.

Guided tasks with a live 'what you know' panel that fills in as you reason.

One playful challenge that only works if you actually understood the idea.