These materials are for use by elementary and middle school teachers in the state of Illinois. This document contains five modules for teaching land use and solid waste concepts. Topics include: (1) "Earth's Closed System"; (2) "Waste Alert"; (3) "Solid Waste/Litter"; (4) "Hazardous Waste"; and (5) "Recycling." Each module contains student resources such as text, maps, handouts, and diagrams; classroom materials such as posters; and activities such as projects, experiments, games, and puzzles. In several modules, supplemental and extension activities are suggested. (CW)