# One less with manipulatives and counting

I can find one less from a group using manipulatives and counting.

# One less with manipulatives and counting

I can find one less from a group using manipulatives and counting.

## Lesson details

### Key learning points

- Secure understanding of one less as the number before.
- Use a variety of manipulatives and the stem sentence to deepen understanding that the number before is one less than .
- Answer questions such as 'What number comes before 5 when counting?'

### Common misconception

Pupils may start counting on the number given and not recognise that the number before is one less.

Model counting back and highlight the number before alongside the manipulatives. Give opportunities for pupils to remove one from a set.

### Keywords

One less than - One less than is when there is a smaller value by one.

One fewer than - One fewer than is when there is a smaller quantity by one or one has been removed from the set.

Number before - When counting, the number before is the one that comes before a given number.

### 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).

## Video

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