Students learn how to calculate the volume and surface area of spheres using the formulae.

As learning progresses they consider hemispheres and various composite spherical shapes.

**Differentiated Learning Objectives**

- All students should be able to calculate the volume and total surface area of a sphere.
- Most students should be able to calculate the volume and total surface area of a hemisphere.
- Some students should be able to calculate the volume and total surface area of compound shapes involving spheres.