Explain what area is | Maths | Quizalize & Oak National Academy

Starter quiz

What shape is being described here? A flat shape with 4 straight sides of equal length. Every interior angle is a right angle (90°).
- Circle
- Rectangle
- Square ✓
- Equilateral triangle
- Regular hexagon
Which of these images shows a polygon?
Match the 2D shape with the correct name.
- a
  
  ⇔
  
  circle ✓
- b
  
  ⇔
  
  pentagon ✓
- c
  
  ⇔
  
  hexagon ✓
- d
  
  ⇔
  
  square ✓
What is the perimeter of the rectangle?
- 6 cm
- 5 cm
- 10 cm ✓
- 30 cm
What is the perimeter of the square? ______ cm
- '12' ✓
Which of the following shapes would tessellate with itself?
- a
- b
- c ✓
- d ✓

Fill in the blank: ______ is the measurement of a flat surface. It measures a 2D space.
- 'Area' ✓
Which of these shapes is most commonly used for measuring the area of a flat surface?
- a
- b
- c
- d ✓
Which of these images have an area that can be measured?
Which 2D shape appears on all six of the faces of this brick and has measurable area? ______
- 'rectangle' ✓
Complete the sentence: The shape has an area of just over ______ square units.
- '15' ✓
Square units are being used to measure the area of this shape. How many complete square units can be seen in the image?
- '18' ✓

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Some shapes are better than others to cover the surface and count the area.
The surface of the shape must be covered with no gaps or overlaps; the unit used must tessellate.

Pupils may well have had recent experience of perimeter. Perimeter and area are easily confused.

Remind pupils that running their finger around a 2D shape will give the perimeter. Running it inside the shape will give the area.

Polygon - A two-dimensional shape made up of three or more straight lines.
Tessellate - A shape tessellates if copies of it can fully cover a space without overlapping.