The general idea of the instructions of how to make these awesome balls is this: Mix together 1 cup of water and 1 cup of flour, dip the cotton balls into the mixture, and bake at 300F for 45 minutes. Wait until they cool, and write math problem or sight words on them. For better or more detailed instructions, with step by step pictures check out this blog posting. I could have done an elaborate post on it, but she did such a great job, I couldn't have made it better.
One happy boy to be doing math in the most violent way he can!
Very happy getting to use a grown-up hammer while working on our hand-eye coordination!