This is a complete lesson on rationalising denominators that will teach students how to write surd expressions with rational denominators. The lesson is designed with the new GCSE specification in mind.

### Lesson Objective

- To rationalise the denominators of fractions involving surds.

### Who is this Lesson For?

This pack is designed for GCSE higher tier students. It could also be used with high ability Key Stage 3 students.

### What is Included?

Included in this download are the following:

- Full lesson plan for the ‘Rationalising Denominators’ lesson, including introduction, teaching content, individual activities, plenary and suggested support and extension activities
- Surds Mind Map
- Student Worksheet on Rationalising Denominators
- Plenary Slide
- Further Algebra Fact Sheet
- Complete Solutions to all Questions

### Lesson Progression

This is the first lesson in the Further Algebra unit of work (the unit is also **available as a pack** including homework activities and a unit assessment).

The other lessons in the unit are: