Students will learn how scaling a 2D figure affects its area. Then students will learn how scaling a 3D figure affects its surface area and volume.
Conclude by giving your students these challenges:
- Triangular Teaser by NRICH
- One O Five by NRICH
- 2016 AMC 8, Problem 4
Mentally determine what fraction is shaded.

Answer: \((3/16)\pi\)