This is a complete lesson on changing the subject of harder formulae that follows on from the lesson on changing the subject of a formula by looking at how to change the subject of formulae with fractions, powers and roots and where the subject occurs more than once. The lesson is designed with the new GCSE specification in mind.

- To change the subject of formulae involving fractions, powers and roots.
- To change the subject of a formula where the subject occurs twice.

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

Included in this download are the following:

- Full lesson plan for the ‘Changing the Subject of Harder Formulae’ lesson, including introduction, teaching content, individual activities, plenary and suggested support and extension activities
- Changing the Subject Spider
- Student Worksheet on Changing the Subject of Harder Formulae
- Expressions Cards
- Blank Flow Charts
- Complete Solutions to all Questions

This is the second lesson in the ‘Rearranging Equations, Graphs of Cubic & Reciprocal Functions and Simultaneous Equations’ unit of work (foundation tier) and also the fifth lesson in the ‘Setting Up, Rearranging & Solving Equations’ unit of work (higher tier).

The Rearranging Equations, Graphs of Cubic & Reciprocal Functions and Simultaneous Equations unit is **available as a pack** including homework activities and a unit assessment. The other lessons in the unit are:

**Lesson 1 – Changing the Subject of a Formula****Lesson 3 – Proof****Lesson 4 – Cubic Graphs****Lesson 5 – Reciprocal Graphs****Lesson 6 – Simultaneous Equations****Lesson 7 – Solving Simultaneous Equations Graphically**

The Setting Up, Rearranging & Solving Equations unit is also **available as a pack** with homework activities and a unit assessment. The other lessons in this unit are: