Year 2 - Maths
Compare and order lengths
Sense of measure - capacity, volume and mass
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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 choose, use and compare appropriate standard units to estimate and measure length/height mass, capacity and temperature to the nearest appropriate unit.
Lesson Summary
You will learn to compare and order lengths.
Key Notes
- When the units are the same, you can compare lengths in the same way as we compare 2-digit numbers.
- When the units are the same, you can order lengths in the same way as we order 2-digit numbers.
- When the units are different and the numbers are the same, you can compare lengths by looking at the unit.
Vocabulary To Learn
- Compare: You compare to find out what is the same and what is different. You can compare numbers to find out if one is greater than or less than another.
- Order: You can order numbers from the smallest to the largest or from the largest to the smallest. The order stays the same when you count.
Common Mistakes To Avoid
- Children may confuse the comparative language of taller, tallest, longer and longest.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
When the units are the same, you can compare lengths in the same way as we compare 2-digit numbers. When the units are the same, you can order lengths in the same way as we order 2-digit numbers.
2. Use this key word in a maths sentence and explain it clearly. 'Compare'
You compare to find out what is the same and what is different. You can compare numbers to find out if one is greater than or less 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: Children may confuse the comparative language of taller, tallest, longer and longest. Correction: Talk about the difference between longest and tallest. Collect examples together and label each object as tallest or longest to support children's understanding.
More Lessons In This Unit
- Compare and order measurements of mass Study Guide
- Compare and order measurements of volume and capacity Study Guide
- Explain why standard units of measure are needed Study Guide
- Length can be measured in any direction to give height, length and distance Study Guide
- Length can be measured in metres and centimetres Study Guide
- Mass can be measured in grams and kilograms Study Guide
- Read scales in metres and centimetres Study Guide
- Temperature Study Guide
- Volume and capacity can be measured in litres and millilitres Study Guide
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