Year 7 - Maths
Understanding the centre of rotation
Transformations
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit introduces pupils to shape tranformations: enlargements, rotations, reflections and translations both by hand and with technology.
Lesson Summary
You will learn to understand the minimum information required to fully describe a rotation.
Key Notes
- The centre of rotation can be on a vertex of the object .
- The centre of rotation can be lying inside the object .
- The centre of rotation can be lying outside the object .
- You need to give the centre, size and direction of rotation to fully describe a rotation .
Vocabulary To Learn
- Centre of rotation: The centre of rotation is the fixed point about which an object is rotated.
Common Mistakes To Avoid
- The centre of rotation is always in the centre of an object.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
The centre of rotation can be on a vertex of the object . The centre of rotation can be lying inside the object .
2. Use this key word in a maths sentence and explain it clearly. 'Centre of rotation'
The centre of rotation is the fixed point about which an object is rotated. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: The centre of rotation is always in the centre of an object. Correction: The centre of rotation can be anywhere. If it's outside the shape, imagine it like a pole in the ground, attached to the object by a rope.
More Lessons In This Unit
- Checking understanding of basic transformations Study Guide
- Describing a reflection Study Guide
- Describing a rotation's direction and size Study Guide
- Describing a translation Study Guide
- Describing an enlargement Study Guide
- Enlarging objects Study Guide
- Introduction to enlargements Study Guide
- Introduction to reflections Study Guide
- Introduction to rotations Study Guide
- Introduction to translation Study Guide
- Investigating transformations with Desmos Study Guide
- Investigating transformations with GeoGebra Study Guide
- Problem solving with transformations Study Guide
- Reflecting objects Study Guide
- Rotating objects Study Guide
- Transformed objects Study Guide
- Translating objects Study Guide
Browse all guides in the Year 7 Maths guide library.