Puzzles are to math what stories are to language, says noted puzzle designer, author, and mathematical artist Dr. Scott Kim. His first book, Inversions, introduced the world to ambigrams — words written symmetrically so they read upside down. His mathematical art appears in many math textbooks. His puzzles have appeared in numerous magazines, including Scientific American and Discover, and computer games such as Tetris and Bejeweled. He now designs educational games for abcmouse.com.