This book has been graded for interest at 3-6 years.

This book was published 2007 by Farrar Straus Giroux .

Dayle Ann Dodds is a former teacher and holds a degree in early childhood development. She is the author of several picture books, including The Shape of Things and The Great Divide, also written in rhyme and on a mathematical theme. She lives in California. John Manders is an author, artist and songwriter. He lives in the USA.