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Year 7 - Maths

Introduction to translation

Transformations

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 nature of a translation and appreciate what changes and what is invariant.

Key Notes

  • The length of the lines do not change when translated.
  • The angles inside an object do not change when translated.
  • When an object is translated, its image is congruent.
  • The object and its image have the same orientation.

Vocabulary To Learn

  • Translation: Translation is a transformation in which every point of a shape moves the same distance in the same direction.

Common Mistakes To Avoid

  • Students may confuse the term transformation for translation.

3 Quick Questions (With Answers)

1. Solve this in steps: explain the method from this lesson and why each step matters.

The length of the lines do not change when translated. The angles inside an object do not change when translated.

2. Use this key word in a maths sentence and explain it clearly. 'Translation'

Translation is a transformation in which every point of a shape moves the same distance in the same direction. 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 the term transformation for translation. Correction: Translation is one type of transformation.

More Lessons In This Unit

Browse all guides in the Year 7 Maths guide library.