Children's Illustrated Encyclopedia Bring nature, history, science, and geography to life with this child-friendly style and more than 3,000 illustrations, photos, cut-aways and maps. Covering more than 380 fascinating topics, this children's encyclopedia is perfect for curious minds over 9 years and older. Whether working on a project, or just for fun, readers will find exactly what they need of fact-filled, bite-sized chunks on the Arctic and Aztecs, X-rays and zoos, plus everything in between. Hardcover, 600 pages. Recommended for ages 9 to 12 years old.