Year 3 - Maths
Become familiar with scales with different intervals when measuring in grams
Measures: mass and capacity
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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 use weighing scales up to 1kg and measuring tools for volume and capacity up to 1 litre. They will measure mass from 0 to above 1kg using whole kg and grams and measure volume from 0 to above 1 litre using whole litres and ml.
Lesson Summary
You will learn to become familiar with scales with different intervals when measuring in grams.
Key Notes
- The mass of objects can be measured in grams.
- Different scales can be marked with different intervals.
- The mass of objects can be compared using scales.
Vocabulary To Learn
- Mass: Mass is a measure of how much matter something contains. It is measured by how much something weighs. Mass can be measured in grams.
- Gram: A gram is a metric measure of mass (which we feel as weight). A paper clip weighs about 1 gram. The abbreviation is g.
- Interval: Intervals are the spaces between given numbers. They include all given numbers between the numbers marked at the start and end.
Common Mistakes To Avoid
- When comparing masses - if the scales have different intervals or the zero is in different places.
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
The mass of objects can be measured in grams. Different scales can be marked with different intervals.
2. Use this key word in a maths sentence and explain it clearly. 'Mass'
Mass is a measure of how much matter something contains. It is measured by how much something weighs. Mass can be measured in grams. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: When comparing masses - if the scales have different intervals or the zero is in different places. Correction: Remind children that the scale is a number line and we always read number lines from zero; the further the arrow travels, the greater mass.
More Lessons In This Unit
- Comparing and estimating mass and volume Study Guide
- Estimate then measure mass and volume and record in a table Study Guide
- Measure mass in whole kilograms and grams Study Guide
- Measure the mass of objects using grams Study Guide
- Measure volume in whole litres and millilitres Study Guide
- Measuring the volume of liquids using millilitres. Study Guide
- Solve problems involving mass Study Guide
- Solve problems involving volume Study Guide
- Understanding capacity and volume Study Guide
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