(back cover) This new, fun-filled edition of Barron's Math Wizardry for Kids demonstrates to young readers that numbers are fascinating to ponder, fun to calculate, and the key to scientific understanding. Open this book and explore concepts, such as Fibonacci numbers, which dramatically express symmetries in the shapes and number patterns of plant life and other aspects of nature. You'll also discover how to perform math-based experiments, create ciphers, use math principles to crack codes, devise a stock market game, and much more. Design one-of-a-kind puzzles Send secret messages Prove you're smarter than a computer Make a sundial to measure daylight hours Construct a time-telling pendulum Math is both mind-expanding and fun--and Math Wizardry for Kids is the book that proves it! Hundreds of color illustrations