Students learn how to rationalise denominators of simple fractions.

Later, as learning progresses they rationalise denominators using the complex conjugate.

**Differentiated Learning Objectives**

- All students should be able to rationalise a denominator with a integer term as the numerator.
- Most students should be able to rationalise a denominator with a surd as the numerator.
- Some students should be able to rationalise a denominator with a integer and surd in the numerator.