Discover Science: Light and Sound by Dr. Mike Goldsmith

Although they are all around us, light and sound arevery difficult to explain to young children. Now readers can join an expert to uncover what light and sound are, how they are generated, and how a reader's own eyes and ears work. The precise, age-appropriate text, simple hands-on projects, and key vocabulary defined in the glossary make this a great introduction to an essential scientific subject.