Finding one more and one less using representations

You can find one more or one less using representations.

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Year 1

Finding one more and one less using representations

You can find one more or one less using representations.

Download all resources

Share activities with pupils

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Lesson details

Key learning points

Secure understanding of one more/one less using using a variety of manipulatives .
Use the stem sentence one more than... one less than...
Identify a missing number in a sequence.

Common misconception

Getting numbers in the wrong order when completing the stem sentences with one more and one less.

Use the representations to identify and support understanding of which value is one less and which is one more.

Keywords

One more - The next number in the count is one more than the number before and there will be one more object in the set.
One less - The previous number in the count is one less than the next number and there will be one fewer object in the set.

You may decide not to show all slides to the pupils. Use representations familiar to the pupils so that the focus can be on one more and one less and linking this to the counting sequence they have been rehearsing in previous lessons.

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Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).