This activity is part of a unit of study on Long Island Sound.
Students study the estuary and the plants and animals that live there.
In this part of the unit, they begin to investigate the effects of people on the Sound. During the first part of the activity, students learn about the causes of water pollution. They will study the filtration process and ways to clean the polluted water. We have included sample data recording sheets, information sheets for students and simple water tests that can be done without much extra equipment. To understand the causes of water pollution To investigate ways to treat polluted water Day One Discuss with students the percentages of usable, fresh water on earth.