These materials are designed to guide students in grades 4 through 9 in their exploration of key areas of science. The materials consist of 400 experiments with background information in the areas of plants, senses, water, surface tension, air pressure, carbon dioxide, bicycles, flying earth satellites, gravity, magnetism, static electricity, electric current, light and sight, mirrors, heat, and sound. Many line drawings accompany the text. LDJ, 2-77