Have the students estimate how many sprinklers would be needed if the room size was doubled. Use the student sheets to demonstrate the actual area of the new room and the sprinklers needed. Make a large T-table and graph the results together. After the room size has doubled, continue to double. It should be apparent that when the size is doubled that the area quadruples.
Teachers can talk about the T-table and explain what it is and when it is used in real life.
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