Students learn how to work out the nth term of a geometric progression in the form ar^{n-1}.

As learning progresses they consider progressions with fraction and negative common ratios.

**Differentiated Learning Objectives**

- All students should be able to find the common ratio of a geometric sequence.
- Most students should be able to find the common ratio and nth term of a geometric sequence.
- Some students should be able to solve compound percentage problems using geometric sequences.