Barbara McGrath has written over twenty books for children, including McGrath Math- Teddy Bear Math and The Little Green Witch. After graduating from Lasell College with a degree in Early Childhood Education, Barbara opened a preschool where she taught four-to-five-year olds for sixteen years. The educational philosophy was to make learning fun and interesting. The children enjoyed many different ways to learn counting, letters and numbers and experienced hands-on art and science projects. While teaching, Barbara was also a freelance writer for local newspapers. Her love for writing, children, and making learning fun was the inspiration for her first children's book, The M and Amp;M Brand Chocolate Candies Counting Book, which sold over one million copies. In addition to writing for children, Barbara also finds time to write public interest articles for newspapers. She lives near Boston, Massachusetts.

Tim Nihoff is the illustrator of Otter Everywhere(Candlewick). He is also a graphic designer and sculptor who creates toys, furniture, and other "fun fine art" from found objects. Tim lives and works on a small island in Maine.