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.

Scott Nash has illustrated many books for children, including Betsy Who Cried Wolf! by Gail Carson Levine, Saturday Night at the Dinosaur Stomp by Carol Diggory Shields, Over the Moon by Rachel Vail, and Oh, Tucker! by Steven Kroll. He lives with his wife, Nancy, and their dog, Zephyr, on Peaks Island, Maine.