MA28-06 Maths Coming soon
Enlarging a shape by a negative scale factor (Higher)
MA28-06
This lesson is coming soon.
In this lesson
Enlarge a shape from a given centre by a negative scale factor, producing an image on the opposite side of the centre, and distinguish this clearly from a fractional scale factor.
What it covers
- Enlarging a shape by a negative scale factor from a given centre, with the image on the opposite side of the centre and rotated 180 degrees relative to the object
- An explicit side-by-side contrast between a negative scale factor (flips through the centre, opposite side) and a fractional scale factor (stays the same side, shrinks)
Key words
For: AQA GCSE 8300, Edexcel GCSE 1MA1, Eduqas GCSE C300, Cambridge IGCSE 0580
On the specification
| Board | Spec | Statement |
|---|---|---|
| AQA GCSE 8300 | G7 | Identify, describe and construct congruent and similar shapes, including on coordinate axes, by considering rotation, reflection, translation and enlargement |
| Edexcel GCSE 1MA1 | G7 | Identify, describe and construct congruent and similar shapes, including on coordinate axes, by considering rotation, reflection, translation and enlargement (including fractional scale factors) |
| Eduqas GCSE C300 | HG7 | Identify, describe and construct congruent and similar shapes, including on coordinate axes, by considering rotation, reflection, translation and enlargement (including fractional and negative scale factors) |
| Cambridge IGCSE 0580 | E7.1 | Transformations |
For teachers
This GCSE Maths lesson teaches enlarging a shape by a negative scale factor (Higher). By the end, students should be able to enlarge a shape from a given centre by a negative scale factor, producing an image on the opposite side of the centre, and distinguish this clearly from a fractional scale factor. It works through two worked examples and the mistakes examiners report.