Choose a number, write it in the middle box. Kids search vertically, horizontally and diagonally to find addends that equal the number. In grade we use this for numbers as we practice mental math strategies. It's a great "spo
Clothespin Math on a clothes hanger! Easy to make, and self explanatory. I'm thinking a wire clothes hanger would work better, so the clothes pins are easy to slide back and forth (almost like an abacus).