Using everyday items found at home and in the classroom, students perform eye-opening experiments and demonstrations in order to learn about fundamental physical-science principles. Topics include motion, heat, electricity, magnetism, sound, light, and chemistry. Each of the 90 activities comprises a reproducible student worksheet and a page of step-by-step instructions with an explanation of the scientific principle. Students learn to state a scientific problem; predict results; gather, record, and graph data; and draw conclusions. Grades 3-6. Index. Bibliography. Glossary. Illustrated. Good Year Books. 283 pages.