Students learn how to write indices with negative powers as fractions. This lesson builds on using the multiplication and division rules of indices to simplify and evaluate terms. More able students are challenged to write unit fractions using index notation

The start of the lesson recaps simplifying indices using the multiplication and division rules. In the plenary students match equal decimals, indices and fraction values.

**Differentiated Learning Objectives**

- All students should be able to write a negative power of one as a fraction.
- Most students should be able to write a negative power as a fraction.
- Some students should be able to convert between a fraction and index notation.