Ancient Egypt (National Geographic Kids: Level 3)

Puzzle creator DR. GARETH MOORE is the author of more than 35 best-selling international puzzle and brain-training titles from a wide range of publishers. He is the creator of "Brained Up" (www.BrainedUp.com), a cutting-edge brain-training site, offering scientifically designed daily sessions.

STEPHANIE WARREN DRIMMER writes about biology, technology, and outer space. Her work has appeared in Popular Science, Popular Mechanics, National Geographic Kids magazine, and Scholastic's SuperScience and Science World magazines. Drimmer is a graduate of New York University's Science, Health and Environmental Reporting program. She is an expert at imparting scientific information at a level that is both fun and understandable and is the author of multiple National Geographic Kids books including Mastermind, Brain Bogglers, and Brain Games: Big Book of Boredom Busters.