What makes your body move? What makes your legs and arms move up and down? Muscles do the trick! Read this book to learn more about your strong muscles and how they work.

Christine Dugan, M.A.Ed., is a former elementary school teacher and online curriculum product developer. After earning her Master's degree with an emphasis on language and literacy, Christine went on to become a writer and editor of educational curriculum. She has written numerous resources for Shell Education and Teacher Created Materials.