Students discuss water pollution and the Safe Drinking Water Act of 1974 after watching a teacher demonstration in which different contaminants are added to tap water. While some contaminants are not harmful to the body, in excess they...

Learners study the ozone and measure its concentration in different areas. Students use Ecobadge strips and other equipement for measurement. Then they share their results on an on-line forum. Also, learners study environmental problems.