nerdi
Sum Sprint
A 3D running game where sums do the steering. A sum pops up, three gates show three answers, and you run through the right one. Get it wrong and the game shows you the answer, then brings that sum back for another go. The run speeds up when you are on a streak and slows down when you need more time to think.
ages 6–9 · about 5 min
What you'll learn
- Adding and taking away within 10, then within 20
- Finding the missing number, like 7 + ? = 12
- Doubles, near doubles and adding tens
- Two-digit numbers plus or minus a one-digit number