Read the Headline Story to the students. Encourage them to draw diagrams to find interesting ways to solve the problem.
Callie made many different square arrays of small tiles. The area of this one is 9 square units. The area of her biggest array was less than 150 square units. What areas could her square arrays have been?
1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144