This is an activity where students discover what doubling and tripling the dimensions of squares, rectangles, triangles and parallelogram does to the resulting perimeter and area. This investigation allow student to conclude that no matter which polygon they begin with, the result is the same. Doubling the dimensions changes the perimeter by a factor of 2 and the area by a factor of 4. Tripling the dimensions changes the perimeter by a factor of 3 and the area by a factor of 9. Students must calculate the perimeter and area of each figure before they can answer key questions leading them to their discovery about scale factors.
This activity address applications of CCSS 6.G.1.