Presented is the Science component of the Iowa Developed Energy Activity Sampler (IDEAS), a multidisciplinary energy education program designed for infusion into the curriculum of grades 7-12. Also contained in the program are activity sets for Home Economics (SE 034 678), Industrial Arts (SE 034 679), Language Arts (SE 034 680), Mathematics (SE 034 681), and Social Studies (SE 034 683). Contained in this manual are the 55 student-centered activities from the complete IDEAS curriculum that relate to secondary science. Topics of the lesson include energy flow, thermodynamics, energy limits, alternative energy sources, life styles, and insulation. Activities are arranged under six concepts: (1) Energy is basic; (2) Energy usefulness is limited; (3) The environment is affected by energy exchanges; (4) Energy choices affect society; (5) Conservation; and (6) The future is ours to shape and share. Lesson plans include discussion questions and background information, and they are usually illustrated with charts, diagrams, or drawings. (Author/WB)