I have a second grade boy who is moderately gifted in math. He has finished memorizing all of his math facts (addition/subtraction/multiplication/division)and I'm looking for resources to use after school (only ~10 min/day)and in the summer. He isn't challenged in math at school so I want to give him a bit of that at home, but not something that will take up too much time. I've looked at the third grade curriculum and he has mastered most of that so I'm probably looking for something in the fourth grade range. Any help?
