Introduction to enlargements
I can understand the nature of enlargements and appreciate what changes and what is invariant
Introduction to enlargements
I can understand the nature of enlargements and appreciate what changes and what is invariant
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- An enlargement means a change in size.
- The lengths of the lines may change when enlarged.
- The angles inside an object do not change when enlarged.
- When an object is enlarged, the image is similar.
Keywords
Enlargement - Enlargement is a transformation that causes a change of size.
Similar - Two shapes are similar if the only difference between them is their size. Their side lengths are in the same proportions.
Common misconception
Enlargement only refers to an increase in size.
The transformation 'enlargement' refers to a change of size that can be either a stretch or a shrink.
To help you plan your year 7 maths lesson on: Introduction to enlargements, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 7 maths lesson on: Introduction to enlargements, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 3 maths lessons from the Transformations unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Starter quiz
6 Questions
6
9
16
30
