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Year 1 - Maths

Count efficiently in groups of five

Unitising and coin recognition - counting in 2s, 5s and 10s

Unit Summary

In this unit pupils will count efficiently in groups of 2 5 10. They will recognise and explain the value of 1p 2p 5p 10p coins and how a single coin can be worth several pennies. 

Lesson Summary

You will learn to count in groups of five and identify how many groups there are.

Key Notes

  • Objects can be put into groups of 5 to make them easier to count.
  • It is more efficient to skip count in fives instead of ones.
  • Groups of 5 can be called fives.
  • Counting back in fives from a given amount can be used to check that the count was accurate.

Vocabulary To Learn

  • Group of 5: Group of five objects that can be counted in fives.
  • Fives: Another name for the multiples of five.
  • Altogether: The amount in the whole set or group.
  • Accurately: An accurate result means a result that is correct.
  • Efficiently: Not wasting time or effort. An efficient strategy is one we can carry out easily.

Common Mistakes To Avoid

  • Children may confuse the number of groups with the total, so 3 groups of 5 may be counted as 3 and not 15

3 Quick Questions (With Answers)

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

Objects can be put into groups of 5 to make them easier to count. It is more efficient to skip count in fives instead of ones.

2. Use this key word in a maths sentence and explain it clearly. 'Group of 5'

Group of five objects that can be counted in fives. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: Children may confuse the number of groups with the total, so 3 groups of 5 may be counted as 3 and not 15. Correction: Provide opportunities for children to identify both the number of groups as well as the total throughout. Encourage the use of the stem sentences to support their articulation of this.

More Lessons In This Unit

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