Perimeter
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Threads
Why this why now
In this unit, pupils explore the concept of the perimeter of a shape. They count and then use measurement to work out the side lengths. The unit looks at regular and irregular shapes and pupils identify where multiplication can be used to calculate area. They calculate missing side lengths when the perimeter is known and understand that different shapes can have the same perimeter. A good understanding of perimeter will reduce the risk of confusion when the concept of area is taught.
Prior knowledge requirements
- Measure side lengths
- Understand the concept of distance around a shape
- Use addition to calculate total length
Threads
Why this why now
In this unit, pupils explore the concept of the perimeter of a shape. They count and then use measurement to work out the side lengths. The unit looks at regular and irregular shapes and pupils identify where multiplication can be used to calculate area. They calculate missing side lengths when the perimeter is known and understand that different shapes can have the same perimeter. A good understanding of perimeter will reduce the risk of confusion when the concept of area is taught.
Prior knowledge requirements
- Measure side lengths
- Understand the concept of distance around a shape
- Use addition to calculate total length
Perimeter
In this unit pupil will learn perimeter as the distance around the edge of a 2D shape. They will learn perimeter is measured in units of length found by counting units and by calculating by adding the side lengths of a 2D shape.
10 lessons in unit
slide decks, worksheet PDFs, quizzes and lesson overviews. You can select individual lessons from the Perimeter unit and download the resources you need, or download the entire unit now. See every unit listed in our primary maths curriculum and discover more of our teaching resources for primary maths programmes.