Students predict how much water they will actually use in one day at school. Water Use Ask students to predict how much water they each will use at school that day. Copy the chart from the teacher page onto the board. Record students' predictions on the chart. Have students raise their hands to tally the number of guesses for each range of water use.
Students map their daily water use.
Mapping Your Water Use Have students use one copy of the student page to monitor their water use for the rest of the day, both at school and at home. Students calculate rate at which the water comes out of the school water fountain and basin. Have students convert these rates to gallons per minute. Tell students to use these rates with their completed student pages to calculate the amount of water they used at school. Show students the transparency to point out how much was used in flushing the toilet, etc.