This is a great program to really help kids visualize the math problems without having to have little blocks all over the house. I love the idea of the manipulatives, but hate the mess. This is the perfect solution, in my opinion. Plus there are some fun games. The player can either compete against the computer or another player. Whole Numbers Fun can be purchased here for $29.95. Math Galaxy also has Fractions Fun, Word Problems Fun, Algebra Fundamentals, and more. There are also some e-books and worksheet generators. This is a great supplement to use with any math curriculum.