Royston’s latest science title is an in-depth introduction to the human body for the youngest readers. Divided into five main sections (heart and lungs, bones and teeth, brain, digestive system and skin), the book treats subtopics in successive double-page spreads, making information easily digestible for young children. Throughout the text, the emphasis is both on understanding how the body works and learning how to keep it in prime condition by eating right, exercising and so on. The “notes for parents and teachers” at the conclusion of each chapter give ideas for further activities that will broaden and deepen children’s understanding. This hands-on approach, which continues in the activity sections that grace almost every spread, is what truly makes this book shine. Full-color photographs of children and just-detailed-enough illustrations are a great balance to the information presented. (glossary, index) (Nonfiction. 4-10)