This publication contains eighteen experiments and eight classroom activities. The experiments are of varying difficulty and cover the important aspects of solar energy utilization. Each experiment is self-contained, with its own introduction and background information. Energy measurements are emphasized and techniques for collector efficiency determinations are considered. Among the topics discussed are: (1) altitude and azimuth of the sun; (2) radiation characteristics; (3) energy collection with converging lenses; (4) air and water solar collectors; and (5) energy storage in gravel beds and in salt hydrates. Both theoretical and practical engineering considerations are illustrated by the experiments. Many experiments are directly applicable to existing physics, general science, and environmental science curricula, while others are of sufficient difficulty and duration to challenge college and the most advanced secondary students. The eight classroom activities present worldwide energy data and solar energy data for individual student analysis. This manual can serve as a useful classroom resource as well as a general reference. (Author/MR)