1. Create a rectangle using building blocks. 2. Use a tape measure or ruler to figure out the perimeter. 3. Create a different shape next to the first one but try to keep the perimeter the same. 4. Use to take a photo of the two constructions side-by-side. 5. Use to say what their perimeter measures and how you found it. 3. Use a tool of your choice to show and/or tell about what you discovered. 4. Remember to to save your work.