This workbook contains 47 activities and exercises which reinforce lesson topics found in the grade 3 science textbook. These lesson topics, presented in nine sections in the textbook, focus on such areas as: (1) solar energy, electricity, and light; (2) solar system, planets, earth motions, and phases of the moon; (3) gravity, rocks, and erosion; (4) atmospheric phenomena; (5) water and water resources; (6) plants found in deserts, forests, and savannahs, and plant products which are used as food; (7) animals found in deserts, forests, and savannahs; (8) the bodily senses and health concepts; and (9) changes in states of matter. The activities and exercises include word searches, crossword puzzles, fill-ins, and short answer questions. (JN)