The Number Devil - A Mathematical Adventure In THE NUMBER DEVIL, kids have a magical experience that introduces them to the power of numbers. Learn essential math concepts and even try them out in math-action games! The witty Number Devil pops in to Roberts dreams and shows him how devilishly simple numbers can be. Journey with young Robert to Number Paradise where you both will learn the power & magic of numbers, and develop new math skills. Discover the tricks and wonders of numbers by magically transforming unfamiliar or difficult math concepts into a dynamic learning experience! Math topics include Prime Numbers, Square Roots, Exponents, Infinite numbers, Concepts of zero and infinity, Fibonacci Numbers, and much more! For boys & girls ages 8 and up.