Students learn how to derive the formula for the area of a circle π=r^{2}.

As learning progresses, students find the area of a circle in terms of π.

**Differentiated Learning Objectives**

- All students should be able to calculate the area of a circle to 3 significant figures.
- Most students should be able to calculate the area of a circle as a multiple of π.
- Some students should be able to solve problems involving the area of a circle.