Please take a moment to review Hachette Book Group's updated Privacy Policy: read the updated policy here.

What is The Periodic Table?

Learn The Periodic Table with Theodore Gray's The Elements Trilogy

Baby Board Books

More Titles from Theodore Gray

Meet The Author: Theodore Gray

Theodore Gray is the author of The Elements, Molecules, and Reactions, as well as Theodore Gray’s Completely Mad Science. He is the creator of the bestselling iPad apps “Elements” and “Molecules,” which have both been named “App of the Week” by Apple and was Director of “Disney Animated” (also honored by Apple as “iPad App of the Year”). Gray appeared on stage with Steve Jobs several times in his capacity as a software creator. He also co-founded Wolfram Research, Inc., makers of the widely-used software Mathematica and the Wolfram Alpha website. He lives in Urbana, Illinois.

Discover More