Math-facts practice where each answer reveals part of a hidden picture, looks after a pet, or places a falling Tetris piece, with a quiet record of what's getting better.
Toys
2026
Small things made to try an idea, most of them in an afternoon. They run in the browser; play with them.
Toys
Math-facts practice where each answer reveals part of a hidden picture, looks after a pet, or places a falling Tetris piece, with a quiet record of what's getting better.