Year 1 - Maths
Explain that items can be compared using length and height
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 compare items according to their length and height.
Key Notes
- When comparing different heights and lengths, know the language used varies depending on what we are describing.
- The ___ is taller / shorter than the ___.
- The ___ is longer / shorter than the ___.
- When travelling, some objects travel further, and some objects travel less far.
Vocabulary To Learn
- taller than: an object has more height than another.
- longer than: an object has more length than another.
- shorter than: an object has less height or length than another.
- further: an object has travelled further than another or a distance has more length than another.
- less far: an object has not travelled as far as another or a distance has less length than another.
Common Mistakes To Avoid
- Inaccurate use of language e.g. 'Alex is longer than Sam' instead of 'Alex is taller than Sam'.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
When comparing different heights and lengths, know the language used varies depending on what we are describing. The ___ is taller / shorter than the ___.
2. Use this key word in a maths sentence and explain it clearly. 'taller than'
an object has more height than another. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: Inaccurate use of language e.g. 'Alex is longer than Sam' instead of 'Alex is taller than Sam'. Correction: Encourage children to verbalise the comparisons they make eg. provide sentence scaffolds and ask them to repeat key sentences as a class.
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 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 a whole partitioned into 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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