Conservation

I can explain that when a number of objects has been rearranged, the amount stays the same, as long as nothing has been added or taken away.

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Year 1

Conservation

I can explain that when a number of objects has been rearranged, the amount stays the same, as long as nothing has been added or taken away.

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Share activities with pupils

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Lesson details

Key learning points

Recognise amounts that have been rearranged.
Generalise that if nothing has been added or taken away, then the amount is the same.

Common misconception

If using slides, not recognising objects have been rearranged and counting all again.

Gather objects to manipulate (either under a visualiser with the whole class, or in front of a small group) so that children can clearly see that none have been added or taken away.

Keywords

Same - Way in which two or more things we are comparing are like each other.
None - None means the same as nothing or not having changed something.
Some - Some means a number of things.

Set up the ideas within the slides practically so that children can clearly see what is happening to each set of objects. You might wish to try using a puppet to challenge the ideas throughout this lesson.

Teacher tip

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).