Year 1 - Maths
Use a part-part-whole model to represent a whole partitioned into two parts
Comparing quantities - part part whole relationships
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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 explain that items can be compared using length and height, mass and volume/capacity. They will compare sets of objects using equality/inequality symbols. Pupils will also explore part-part-whole relationships with representations.
Lesson Summary
You will learn to use a part-part-whole model to represent a whole partitioned into two parts.
Key Notes
- A whole group can be split in different ways and the 2 parts may look different.
- Add a numeral to the whole position when the objects have been moved out.
- Use part-part-whole diagrams in different orientations.
- Include examples where the two parts contain the same number of items.
- Represent the whole and the parts using numerals alongside the concrete and pictorial representations.
Vocabulary To Learn
- whole: All of something. Complete.
- part: A piece of a whole.
- partition: To break up a whole into parts.
- part-part-whole: A pictorial representation that shows the whole and its parts.
Common Mistakes To Avoid
- When using the part-part-whole model, children may think that the whole is also one of the parts.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
A whole group can be split in different ways and the 2 parts may look different. Add a numeral to the whole position when the objects have been moved out.
2. Use this key word in a maths sentence and explain it clearly. 'whole'
All of something. Complete. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: When using the part-part-whole model, children may think that the whole is also one of the parts. Correction: When using the part-part-whole model, move the objects out of the whole into the parts, and replace the whole with a number.
More Lessons In This Unit
- Count a set of objects Study Guide
- Explain that a whole can be split into parts Study Guide
- Explain that a whole can represent a group of objects Study Guide
- Explain that items can be compared using capacity Study Guide
- Explain that items can be compared using length and height Study Guide
- Explain that items can be compared using weight and mass Study Guide
- Explain what a part-part-whole model is Study Guide
- Explain what a whole is Study Guide
- Identify a part of a whole group Study Guide
- Solve problems by comparing sets of objects Study Guide
- Solve problems using part-part-whole models with more than two parts Study Guide
- Use a part-part-whole model to represent partitioning into more than two parts Study Guide
- Use equality and inequality symbols to compare sets of objects Study Guide
- Use equality and inequality symbols to compare the relative size of two numbers Study Guide
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