Year 1

Year 1

# To compare masses using non-standard units

## Lesson details

### Key learning points

1. In this lesson, we will use non-standard units to measure the mass of toys in the balance scales.

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

## Video

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## Worksheet

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## Starter quiz

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### 4 Questions

Q1.
Select the correct answer for what the scale is showing.
The clock is heavier than the coins.
Correct answer: The coins and the clock have the same mass.
The coins are heavier than the clock.
Q2.
Select the correct answer for what the scales are showing.
Correct answer: The ball is lighter than the money.
The money is lighter than the ball.
The scale is balanced.
Q3.
Which one would be the heaviest?
child
Q4.
Which one would be the lightest?
car

## Exit quiz

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### 4 Questions

Q1.
Estimate how many cubes would weigh the same as this mobile phone.
1 cube
100 cubes
Q2.
If I had 20 cubes on one side of the balance scales, how many would I need to on the other side to balance the scales?
12