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Year 3 - Maths

Identify equal parts in a whole when they do not look the same in 2D shapes

Identify parts and wholes in different contexts

Unit Summary

In this unit pupils will identify parts and wholes in different contexts including sets of objects, 3-D shapes and linear contexts.

Lesson Summary

You will learn to identify equal parts in a whole when they do not look the same in 2D shapes.

Key Notes

  • Equal parts may not look the same
  • The whole has been divided into __ equal parts
  • One equal part is shaded so each equal part is __ of the whole

Vocabulary To Learn

  • Whole: The whole is all of a group or number.
  • Part: A part is a section of the whole.
  • Equal: Have the same quantity or value.
  • Unequal: Do not have the same quantity or value.

Common Mistakes To Avoid

  • Children might find it hard to create their own puzzles in the final part of Task B as the dotted lines can be overwhelming.

3 Quick Questions (With Answers)

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

Equal parts may not look the same. The whole has been divided into __ equal parts.

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

The whole is all of a group or number. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: Children might find it hard to create their own puzzles in the final part of Task B as the dotted lines can be overwhelming. Correction: Model the process heavily for those who need it, where possible using a visualiser and sharing finished examples. Make good use of the template. A bigger version can be found in the additional materials.

More Lessons In This Unit

Browse all guides in the Year 3 Maths guide library.