Jonathan London is a poet, an adventurer, and the author of twenty-eight books about Froggy, as well as many other picture books and novels. The parents of two sons, he and his wife live in northern California.

Lauren Eldridge grew up in Fargo, North Dakota and studied landscape architecture, before turning her hands to model making. She now lives with

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