Measure length using a ruler | Maths | Quizalize & Oak National Academy

Starter quiz

What is the missing from the ruler?
- 0 ✓
- 1
- 6
What is the height of the jug? Write the number. ______ centimetres
- '13' ✓
Centimetre cubes are used to measure two robots. True or false? Robot A is 1 centimetre taller than Robot B.
- True ✓
- False
Who has measured accurately?
- a
- b ✓
Which car is 15 centimetres in length?
Which item is in the wrong place?
- pen
- felt tip ✓
- eraser

Exit quiz

Complete the sentence. Rulers always start at ___ cm.
- 10
- 1
- 0 ✓
What is a shorter way of writing centimetres?
- c
- cm ✓
- m
- mm
How long is the pen?
- 9 cm ✓
- 9 mm
- 8 cm
Complete the sentence. The tower of bricks is ______ cm tall.
- '9' ✓
Look at the picture. Jun thinks the highlighter is 13 cm long. What mistake has he made?
- The ruler is the upside down.
- The highlighter does not start at 0 cm. ✓
- He looked at the wrong end of the highlighter, the measurement is 3 cm.
Which of these objects has been measured accurately?
- The carrot is 15 cm long.
- The spoon is 14 cm long. ✓
- The leaf is 15 cm long.
- The pen is 13 cm long.

Worksheet

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Presentation

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Lesson Details

Key learning points

Using a ruler means that you all get the same measurement for the same object.
When using a ruler always measure starting from zero cm.
Each number on the ruler represents one cm.
cm is the short form of centimetres.
The number on the ruler where the object ends tells you the length of the object.

Common misconception

Children may align the end of their object with the end of the ruler, rather than zero.

Use a sticker or coloured pen to highlight the zero on the ruler so that children's attention is drawn to the zero when they are measuring length using a ruler.

Keywords

Ruler - A tool for measuring length.
Centimetre - A measure of length (about the width of a fingernail).
Cm - A shorter way of writing centimetre.
Zero - A number that shows that there is no amount.