Year 1 - Maths
Conservation
Counting, recognising and comparing numbers 0 - 10
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Study Guides
This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit pupils will review their knowledge from the EYFS of counting in all its forms to and from 10. They will compare and order numbers to 10 practically and will consider the role of zero to represent nothing.
Lesson Summary
You will learn to 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.
Key Notes
- Recognise amounts that have been rearranged.
- Generalise that if nothing has been added or taken away, then the amount is the same.
Vocabulary To Learn
- 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.
Common Mistakes To Avoid
- If using slides, not recognising objects have been rearranged and counting all again.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Recognise amounts that have been rearranged. Generalise that if nothing has been added or taken away, then the amount is the same.
2. Use this key word in a maths sentence and explain it clearly. 'Same'
Way in which two or more things we are comparing are like each other. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: If using slides, not recognising objects have been rearranged and counting all again. Correction: 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.
More Lessons In This Unit
- Anything can be counted Study Guide
- Counting different groups Study Guide
- Counting forwards and backwards within 10 Study Guide
- Counting objects within ten Study Guide
- Finding the missing numbers Study Guide
- Introducing zero Study Guide
- More than and fewer than Study Guide
- One less with manipulatives and counting Study Guide
- One more with manipulatives and counting Study Guide
- Ordering numbers to 10 Study Guide
- Ordinal numbers Study Guide
- Representing counting songs Study Guide
- Subitising numbers to five Study Guide
- Using numerals Study Guide
Browse all guides in the Year 1 Maths guide library.