These resource books provide the busy teacher with science lessons that are appropriate and doable. Step-by-step lessons aligned with National Science Education Standards, make science relevant to real life. There are hands-on activities with student record sheets. The Human Body presents information and investigations on these nine concepts: Cells are the fundamental unit of life; Specialized cells protect the body from harmful substances; Food follows a path as it isdigested; Good nutrition provides energy for cell growth and repair. The heartand lungs work together. Muscles and bones provide movement and support. The nervous system relays messages to and form the brain. Parents pass traits to future generations. Body systems interact.