Water Usage Chart Subjects Math, science Purpose This guide will give you an estimate on how much water your family uses. This chart is filled out by the student to give them and their family an idea of how much water they regularly use versus how much they could be using by adopting conservation techniques. Builds water conservation habits at home. Activity in Brief Students bring last month's home water bill. They then learn water conservation techniques to be practiced at home.
Epidemiologists study the incidence, transmission, distribution, and control of disease.
With waterborne diseases, determining how the water supply was contaminated is critical to solving the problem. The case histories of affected patients and any associations among patients help epidemiologists solve the mysteries of disease. Procedure Warm up Ask students if they can identify the world's number one killer. Explain that thousands of children die each year from diarrhea. Tell students that diarrhea is caused by microorganisms such as bacteria, viruses, and protozoa.