This project developed 46 units of science activities suitable for individual use outside of school by elementary school children (K-6) with supervision by an adult advisor. Focusing on the physical, biological, earth, and health sciences, experimental work, and science processes, the materials (obtained at home or in supermarkets) are designed to complement classroom science programs or to be used on an individual basis for enrichment. Each unit consists of a child's and advisor's guide. The child's guide provides a brief introduction to the subject, suggested experimental investigations, and questions. The advisor's guide provides more detailed background information and suggestions for helping the child carry out the study. Although materials may be used by individuals independent of a school, they are designed for distribution by a teacher. In this mode children are invited to participate voluntarily. An evening parents' meeting is held by the teacher to explain the rationale of the activity and to conduct a workshop on the forthcoming unit. Parents attending are given advisor's guides and investigations are sent home for children, who are encouraged to keep lab books, and periodically report their progress in school, providing added learning in communication skills and mathematics. (Author/JN)