This unit develops the concept of solar energy as a renewable resource. It includes: (1) an introductory section (developing understandings of photosynthesis and impact of solar energy); (2) information on solar energy use (including applications and geographic limitations of solar energy use); and (3) future considerations of solar energy (discussing current methods of use and projected uses). Student activities are listed; a few contain descriptions of related concepts and materials needed for the investigations. Also included are evaluation questions and recommended films on solar energy (with source indicated). (ML)