New
New
Year 5

# Measure the area of flat shapes using square centimetres

I can measure the area of shapes using square centimetres.

New
New
Year 5

# Measure the area of flat shapes using square centimetres

I can measure the area of shapes using square centimetres.

Share activities with pupils
Share function coming soon...

## Lesson details

### Key learning points

1. Area can be measured in square centimetres.
2. You write square centimetres as cm²
3. Fractions of square centimetres can be added to make whole square centimetres.

### Common misconception

Some pupils count fractions of a square, such as a right-angles triangle, as a whole square unit.

Cut out the shape to show that two ‘parts’ of a square sometimes go together to make a complete square unit.

### Keywords

• Square centimetres - Square centimetres are the area equal to a square that is one centimetre on each side.

• Rectilinear - A rectilinear shape is a 2D shape with straight sides and right angles.

A useful way to give pupils an idea of the magnitude of a square metre when compared with a squared centimetre is placing a 1 cm cube inside four metre sticks put together to make a square shape.
Teacher tip

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Starter quiz

### 6 Questions

Q1.
To which mathematical term does this definition belong?   is the measurement of a flat surface. It measures a 2D space.
Perimeter
Polygon
Ruler
Q2.
Which shape is most commonly used to measure area?
Triangle
Rectangle
Circle
Q3.
What is the missing number?   6, 12, 18, , 30
Q4.
Order the following units of length from smallest to largest
1 - mm
2 - cm
3 - m
4 - km
Q5.
Match the image with the correct description.

b

c

a

Q6.
Match the shapes with their correct areas in square units.

b

a

c

## Exit quiz

### 6 Questions

Q1.
Order the following areas from largest to smallest.
1 - square km
2 - square m
3 - square cm
4 - square mm
Q2.
Match the item with the square unit that would be the most useful for finding its area.

a small town

Correct Answer:square mm,the surface of a daisy petal

the surface of a daisy petal

Correct Answer:square m,the floor in a bathroom

the floor in a bathroom

a phone screen

Q3.
Which of these is another way of writing 'square centimetres'?
2 cm