David A. Adler taught math for eight years. In that time he learned many things from his students -- including the fact that they thought fractions were hard. So he decided to prove that learning how to work with fractions is not only easy, but also fun! He lives with his family on Long Island. You can learn more about him at www. davidaadler.com. Edward Miller loves to make concepts clear to kids and has demonstrated that in his previous nonfiction books. School Library Journal praised his Alphabeep: A Zipping, Zooming ABC by Debora Pearson as "stunningly illustrated." He lives in New York City. You can visit his website at www.edmiller.com.