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KS1 & KS2 maths curriculum

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Year 4

Maths
Year 4

Perimeter

10 lessons

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  • Geometry and Measure
  • Number: Addition and Subtraction

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.

  1. Know that a regular polygon has sides that are the same length and angles that are the same size
  2. Know that the perimeter is the distance around a 2D shape
  3. Understand that different shapes can have the same perimeter
  4. Know that perimeter is measured in units of length and can be found by counting or measuring units
  5. Know that perimeter can be calculated by adding together the side lengths of a 2D shape
  6. Know that the perimeter of a rectangle can be calculated by addition and multiplication
  7. Know that unknown side lengths can be calculated from the perimeter and known side lengths
  8. Understand that the perimeter of a regular polygon can be calculated by multiplication
  9. Calculate the side length of a regular polygon by division where the perimeter is known
  10. Solve problems involving the perimeter and side lengths of polygons

Use this KS1 and KS2 maths curriculum plan to explore our sequences developed by leading subject exp...

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