Students learn how to calculate speed as a compound measure of distance and time.

Later, as learning progresses students begin to manipulate the speed, distance and time formula to calculate any measure using the other two.

**Differentiated Learning Objectives**

- All students should be able to calculate speed using the S=D/T triangle.
- Most students should be able to calculate speed as a compound measure of distance and time.
- Some students should be able to convert between units of speed using equivalent ratios.