The "Best" Early Math Education series ever. My 4 1/2 year old and 2 1/2 year old grand children are addicted to it. I have shared it with first graders that loved it. I have invented several manipulatives including "Factor Blocks" that has very similar ideas. The way they have animated the introduction to numbers and exposed the multiplicative structure for numbers is fascinating and memorizing. Do not miss it! Highly recommended for kids ages 3-8. Just try it!