Developed for the educable mentally retarded, this spiral program of science instruction presents its subjects on several levels for advanced study and reinforcement. Subjects covered are animals, plants, weather and seasons, earth and earth components, the universe, forces, and the human being. Guides for the primary, intermediate, junior high, and senior high levels include general objectives, activities, and sample experiences. A complete starter unit is included for the first three levels on pets, the senses, and the weather. Suggested resource materials are listed for all levels; forms are included for teacher evaluation of the material. (LE)