The ultimate book of knowledge for kids aged 7 to 9, this thorough children's encyclopedia contains all the homework answers your kids will need, explained clea

This stimulating and comprehensive encyclopedia for children ages 8-12 provides answers to all the questions kids love to ask. Each chapter is jam-packed with m

This stunning visual guide explores and explains the greatest inventions, ideas, and discoveries throughout the ages, and introduces their inventors. Discover t

Over three million copies and 25 years later, Children's Illustrated Encyclopedia is revised and updated with the latest facts, figures, and technologies. Cover

Get children excited about science with this essential, encyclopedic introduction to physics, chemistry, and biology. What makes a firework bang? How do plants