Area, perimeter, position and direction

Area, perimeter, position and direction

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Why this why now

This unit builds on previous work on area and perimeter, introducing the formula for the area of a parallelogram and for a triangle. Pupils calculate the areas from given measurements and missing measurements when given the area of a shape. They also construct shapes by plotting positions on a full coordinate grid, with simple translations and reflections. This work will be developed further in a unit focusing on plotting coordinates in different contexts.

Prior knowledge requirements

  • Measure length using standard units
  • Understand basic properties of 2D shapes
  • Use language of direction and identify turns

Threads

Why this why now

This unit builds on previous work on area and perimeter, introducing the formula for the area of a parallelogram and for a triangle. Pupils calculate the areas from given measurements and missing measurements when given the area of a shape. They also construct shapes by plotting positions on a full coordinate grid, with simple translations and reflections. This work will be developed further in a unit focusing on plotting coordinates in different contexts.

Prior knowledge requirements

  • Measure length using standard units
  • Understand basic properties of 2D shapes
  • Use language of direction and identify turns

Area, perimeter, position and direction

In this unit pupils will explain how to calculate the area of a parallelogram and a triangle. They will describe the relationship between scale factors and side lengths. They will describe positions in all 4 quadrants.