Earth's neighbors have landed: the planets that is! Your child can make his way across our solar system, planet by planet, learning interesting facts like any good astronaut, and making a 3-D mobile.

Why does the earth spin? How is a rainbow formed? Feed the flame of curiosity in your child, and find out the answers to some of those age-old questions about how the world works.

Expand children's problem-solving arsenal with this fundamentals of multiplication workbook.