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Year 1 - Maths

Order and sort numbers into odd and even sets

Composition of numbers 6 to 10

Unit Summary

In this unit pupils will represent numbers 6 - 10 by partitioning in different ways. They will learn what odd and even numbers are and how they can be partitioned. They will identify a missing part when a whole is partitioned into two parts where one of the parts is known.

Lesson Summary

You will learn to explain how numbers that are made out of pairs of 2 are even numbers and numbers that cannot be made out of pairs are odd numbers.

Key Notes

  • We can group representations of numbers according to whether they are made of pairs or not.
  • Shapes representing numbers can be grouped according their shape and to whether they are made of pairs or not.
  • The language of odd and even can be used to describe numbers made of pairs or not made of pairs.
  • --- is made of -- pairs. It is an even number but --- is not made of pairs. It is an odd number.
  • Numbers can be sorted into odds and evens.

Vocabulary To Learn

  • Pair: Two together. Often with something in common.
  • Even: Any number that can be made of pairs. The last digit is 0, 2, 4, 6 or 8
  • Odd: Any number that cannot be made of pairs. The last digit is 1, 3, 5, 7 or 9

Common Mistakes To Avoid

  • Children may see the pairs in odd numbers and think it is an even number.

3 Quick Questions (With Answers)

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

We can group representations of numbers according to whether they are made of pairs or not. Shapes representing numbers can be grouped according their shape and to whether they are made of pairs or not.

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

Two together. Often with something in common. 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 see the pairs in odd numbers and think it is an even number. Correction: Ensure children are looking for the extra one that makes a number odd. Provide opportunities to group other odd sets e.g. pairs of socks, pairs of hands / feet and realising an odd number always has an 'odd' one.

More Lessons In This Unit

Browse all guides in the Year 1 Maths guide library.