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Year 1 - Maths

Counting forward to 20 and back from 20

Counting to and from 20

Unit Summary

In this unit pupils will consolidate counting to 20 and back They will secure their understanding of the teens numbers in a cardinal and an ordinal context.

Lesson Summary

You can count forwards and backwards from any number between 0 and 20.

Key Notes

  • Secure the sequence of numbers to and from 20.
  • Practice one to one correspondence with actions and objects counting forwards and backwards.
  • Use understanding of the sequence of numbers to 20 to count on and back from different starting points securely.

Vocabulary To Learn

  • one more: The number that comes next in the count is one more than the previous number.
  • next: The next number is one more than the previous number.
  • one fewer: The number that comes before in the count is one fewer than the previous number.
  • before: The number before is one fewer than the previous number.

Common Mistakes To Avoid

  • Failing to match one count to one action.

3 Quick Questions (With Answers)

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

Secure the sequence of numbers to and from 20. Practice one to one correspondence with actions and objects counting forwards and backwards.

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

The number that comes next in the count is one more than the previous number. Use this word when showing your method, then check your final answer is reasonable.

3. Spot and fix this common maths mistake.

Mistake: Failing to match one count to one action. Correction: Slow the counting and make the action and count very deliberately at the same time so pupils can imitate the modelling.

More Lessons In This Unit

Browse all guides in the Year 1 Maths guide library.