A classroom size kit for the investigation of health and economic consequences of environmental pollution. The lecture materials contain discussions of chemical composition of fresh air and water, pollutants of the environment, consequences of environmental pollution and treatment and control of pollution. Classroom activities are separated into two categories: air and water pollution. Fifteen activities are perfromed; five dealing with air pollution and ten dealing with water pollution. The water pollution activities include determinatioon of dissolved oxygen, addition of oxygen by aeration and by photosynthesis, removal of oxygen by heating, by respiration and by chemical activity, relationship between bacteria and oxygen, sewage and plant nutrients, treatment of chemical wastes, mine acid pollutants and their effects on fish. The air pollution activities include temperature inversion, the creation of two air pollutants, the effect of air pollution on various materials, and treaments for air pollution. Also includes 19 transparency masters, 47-35mm slides and manual.