Students work together in pairs.
The accuracy of the tables and graphs depicting the information given is evaluated by the teacher. The teacher conducts a discussion based on the importance of not wasting water as one means of protecting the environment. It is stressed that water does not disappear from the earth, but is used over and over. The water that we currently use is the same water that has been on earth since the beginning. A discussion could be held to examine possible reasons why the United States' per-person usage is so high.