Year 7 - Maths
Transformed objects
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 identify whether a shape has been transformed or not.
Key Notes
- There are clues that can be looked for to determine if a shape has been transformed.
- If the size has changed, one shape may be an enlargement of the other.
- If the orientation has changed, one shape may be a rotation of the other.
- If the shapes are mirrored, one shape may be a reflection of the other.
- If the shapes look identical but are in different places, one may be a translation of the other.
Vocabulary To Learn
- Transformation: A transformation is a process that may change the size, orientation or position of a shape.
- Congruent: If one shape can fit exactly on top of another using rotation, reflection or translation, then the shapes are congruent.
- Invariant: A property of a shape is invariant if that property has not changed after the shape is transformed.
Common Mistakes To Avoid
- Students may confuse reflections and rotations depending on the object.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
There are clues that can be looked for to determine if a shape has been transformed. If the size has changed, one shape may be an enlargement of the other.
2. Use this key word in a maths sentence and explain it clearly. 'Transformation'
A transformation is a process that may change the size, orientation or position of a shape. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Students may confuse reflections and rotations depending on the object. Correction: A reflection is the only transformation that changes the sense of the object, so check that first.
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
- Translating objects Study Guide
- Understanding the centre of rotation Study Guide
Browse all guides in the Year 7 Maths guide library.