Teachers, save “Open Middle Challenge - Rectangles: Maxi…” to assign it to your class.

Read through and complete the Open Middle Challenge... 1. Tap on 2. Read over the problem on Slide #1 carefully. 3. Solve the task using the and tools on Slides #1-2. If you prefer, you can solve the problem on a whiteboard or piece of paper, then take and share a of your work. 4. Be sure to show at least three rectangles with a perimeter of 24. Circle the rectangle with the greatest area. 5. Answer the questions on Slide #3 using the or tools. 6. Use the tool to explain your strategy and your thinking about area. 7. Tap on the to add this task to your journal.