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Year 2 - Maths

Mass can be measured in grams and kilograms

Sense of measure - capacity, volume and mass

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 describe the mass of a kilogram and a gram, and choose which unit might be best to measure different masses.

Key Notes

  • Mass is measured in grams and kilograms.
  • 1 kg is about the mass of a laptop or a bunch of bananas.
  • 1 g is about the mass of a raisin or a paper clip.
  • You can use scales to measure mass.

Vocabulary To Learn

  • Mass: When you measure how heavy something is, you are measuring its mass.
  • Grams: A measure of mass (about as heavy as a raisin).
  • Kilograms: A measure of mass (about as heavy as a laptop).

Common Mistakes To Avoid

  • Children may not read scales accurately, particularly when the type of scale changes from a horizontal line to a circular scale.

3 Quick Questions (With Answers)

1. Solve this in steps: explain the method from this lesson and why each step matters.

Mass is measured in grams and kilograms. 1 kg is about the mass of a laptop or a bunch of bananas.

2. Use this key word in a maths sentence and explain it clearly. 'Mass'

When you measure how heavy something is, you are measuring its mass. 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 not read scales accurately, particularly when the type of scale changes from a horizontal line to a circular scale. Correction: Allow plenty of opportunities to explore different types of scales. Find where the same mass would be on different scales and talk about what is the same and what is different about each scale.

More Lessons In This Unit

Browse all guides in the Year 2 Maths guide library.