New
New
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.

New
New
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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Lesson details

Key learning points

  1. Recognise amounts that have been rearranged.
  2. 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 so that children can clearly see that none have been added or taken away.

Keywords

  • The same - The same means that something is equal to something else or has no differences.

  • 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, and try using a puppet who may challenge that the amount of objects is not the same once they have been moved.
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).

Video

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6 Questions

Q1.
What comes next? 1, 2, 3, 4, 5...
4
5
Correct answer: 6
Q2.
How many pieces of fruit?
An image in a quiz
5
6
Correct answer: 7
Q3.
How many cakes?
An image in a quiz
5
Correct answer: 6
7
Q4.
How many are candles on the cake?
An image in a quiz
4
Correct answer: 5
6
Q5.
What comes next? 6, 7, 8, 9 ....
8
9
Correct answer: 10
Q6.
What does subitise mean?
Correct answer: Knowing the amount without counting.
Counting the amount.

6 Questions

Q1.
The same or not the same?
An image in a quiz
Correct answer: The same
Not the same
Q2.
The same or not the same?
An image in a quiz
The same
Correct answer: Not the same
Q3.
The same or not the same?
An image in a quiz
The same
Correct answer: Not the same
Q4.
The same or not the same?
An image in a quiz
Correct answer: The same
Not the same
Q5.
When objects move, the total is ...
Correct answer: the same
not the same
Q6.
When none are added, the total is ...
Correct answer: the same
not the same