This teaching guide provides an interactive introduction to hazardous waste, with particular emphasis on personal responsibility and action. Nine lessons engage advanced grade 10 and grade 11-12 science students in group discussions and actions that help them develop awareness of hazardous waste, understanding of the hazardous waste situation in Ontario, Canada, and opportunities for taking personal action. Students are encouraged to develop skills in classifying, recording information, and classroom discussion. Lessons contain goals, activities, and suggested teaching strategies. Students conduct surveys, research projects, presentations, games, and action plans. A resource section contains reproducible worksheets, survey forms, and fact sheets. Two appendices provide annotated references for 54 books, and 49 audio-visual aids. The teaching guide is accompanied by a guide to hazardous waste terminology, and a booklet and "Enviro-Dial" that suggest alternatives to the use of common household hazardous wastes. (LZ)