• ✓Idea: see the maths as objects you move
• ✓4 manipulatives: take-away, groups, share, ten-frames
• ✓Split remainders into fractions (7÷2 = 3½)
• ✓A teacher lesson first + type the answer & Enter
• ✓Sound, Leo hosts, a "maths master!" screen
• ✓An "easy mode", and a few misses → a breathing pause
• ✓Fills the screen on phone & desktop
• ✓Long-press to undo a share (mobile)planned

✓ = done · ☐ = planned. Every game is built one step at a time like this.