Five units are designed to provide an opportunity for in-depth, technical analysis in the fields of energy, economics, and the environment. In an effort to move upper elementary and secondary students beyond general awareness, activities call for the application of numbers where typically only vague generalities are discussed. Within each chapter, activities are written on three levels of skill development: (1) awareness level, where students identify and analyze concerns by qualitative means; (2) transitional level, where they refine and extend these abilities to quantitative analysis; and (3) operational level, where they apply these techniques in more complex situations. Activities within each unit not only progress in skill level difficulty but also in grade level ranging from fourth to twelfth grade. Drawing upon many subject areas, these interdisciplinary activities focus on five topics: human energy, electricity, space heating, solar energy, and bioconversion. Each unit includes an overview, extensive teaching notes, worksheets, data sheets, and six or more activities. (Author/DC)