The start of the lesson is used to review similarity within triangles. The development phase goes onto extend this by introducing enlarging shapes to a scale factor using a positive integer scale factor and using a centre of enlargement.

### Differentiated Learning Objectives

- All students should be able to enlarge an object to a positive integer scale factor.
- Most students should be able to enlarge an object to a scale factor and centre.
- Some students should be able to perform and describe an enlargement using a positive scale factor.

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