Have students propose ways to reduce these numbers. Based on the data gathered at home, each student should calculate an estimate of the water used on a monthly basis for flushing toilets in their home. Have students compare the minimum or the average volume used to the calculated monthly usage based on data that they gathered at home. E. Students in groups decide on strategy for reducing domestic water waste. Have students agree on and write down a minimum of three behaviors that they will modify during the Galveston Bay unit such as partially filling the toilet tank with bricks, turning off the water while brushing their teeth, limiting showers to 5 minutes.
Students calculate the estimated water volume savings and money savings for a month.
Students record their group s agreement on a wall chart to be used to monitor their progress throughout the unit. One student of each group will measure volume of toilet. This student should estimate the number of gallons used for each bath and shower. Have students come up with a procedure for making these measurements with some degree of accuracy. Have each student estimate all water usage for a week, constructing a data table.