This book is aimed at children in primary school.

This book was published 2003 by Candlewick Press, U. S. .

Stuart J. Murphy is a visual learning specialist. A graduate of the Rhode Island School of Design, he has a strong background in design and art direction. He also has extensive experience in the world of educational publishing. Drawing on all these talents, Stuart J. Murphy brings a unique perspective to the MathStart series. In MathStart books, pictures do more than tell stories; they teach math. Stuart J. Murphy and his wife, Nancy, live in Boston. Cynthia Jabar lives on a small island off the coast of Maine where she loves to paint, to kayak, and to illustrate books for children. Other books she's illustrated include The Greatest Gymnast of All by Stuart J. Murphy and Mommies are for Counting Stars by Harriet Ziefert. She doesn't love washing her car or the dishes! Rick Walton is a former teacher. He speaks Portuguese and Spanish, has travelled throughout North and South America, and now lives in Brazil. He is the author of the Walker picture book Bertie Was A Watchdog, illustrated by Arthur Robins Michael Bedard is one of the world's most popular and successful pop artists. His book Sitting Ducks is a phenomenal success, both here and in the States. Selected as a World Book Day "Super Read" title - one of just two for the 3+ age group - Sitting Ducks has been reprinted many times and already sold over 50, 000 copies in the UK alone.