My 2nd grade daughter is learning how to do math a different way than I did. For this new way to work she has to inherently know how to add any 2 numbers to make 10.
My first game is a simple way to practice making 10. It doesn't keep any score and it only kinda cares if you get the answer right. I'm thinking of making it full screen so it's easier to play on a mobile device and I'll probably make it care more if you get the answer right, but this is what I've started with.