This document was developed in cooperation with secondary teachers and solid waste management professionals. The goal is to integrate steel recycling, natural resource conservation, and solid waste management into science learning. Basic concepts from the following chemistry units have been used to design the lessons and activities: transition metals, chemical reactions, and changes of state and electron configuration. Three lessons are entitled: (1) Supply & Demand; (2) Collect & Haul; and (3) Sort & Produce. Each lesson begins with a background for the teacher which includes: key terms, motivation, demonstration, and evaluation. The background section for the student provides in-depth information on the lesson. The "teacher activity" section contains planning, preparation and safety tips and the "student activity" section provides step-by-step procedures for completing the activity and analyzing the data. Appendixes include a glossary, a list of resources, and a teacher evaluation form. Contains 18 references. (AA)