Zoe zips and zooms around the gym. She's on and off the mats, over and under the bar! She's the greatest--in gymnastics and at demonstrating opposites.

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!