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Right angles

Right angles

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Why this why now

This unit provides the opportunity for pupils to develop their understanding of angles by looking at angles relating to dynamic turning and also static angles as properties of 2-D shapes. Pupils identify right angles as properties of shapes and also identify when shapes have angles which are not right angles. This prepares them for work classifying and measuring angles in the future.

Prior knowledge requirements

  • Identify angles in shapes and turns
  • Recognise a quarter turn as a right angle
  • Compare angles to a right angle using a right-angle checker

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Why this why now

This unit provides the opportunity for pupils to develop their understanding of angles by looking at angles relating to dynamic turning and also static angles as properties of 2-D shapes. Pupils identify right angles as properties of shapes and also identify when shapes have angles which are not right angles. This prepares them for work classifying and measuring angles in the future.

Prior knowledge requirements

  • Identify angles in shapes and turns
  • Recognise a quarter turn as a right angle
  • Compare angles to a right angle using a right-angle checker

Right angles

In this unit pupils will rotate 2 lines around a fixed point to make different angles. They identify vertices and describe half, quarter and three-quarter turns in terms of right angles.

10 lessons in unit

  1. 1

    Make different sized angles by rotating two lines around a fixed point

    I can create different sized angles by rotating lines around a point.
  2. 2

    Identify and describe right angles

    I can identify a square corner as a right angle and can find and identify right angles in the environment.
  3. 3

    Know that a right angle describes a quarter turn

    I can describe turning through a right angle as making a quarter turn and can turn clockwise or anticlockwise.
  4. 4

    Identify properties of triangles

    I can use different properties to identify and sort triangles.
  5. 5

    Identify properties of quadrilaterals

    I can use different properties to identify and sort quadrilaterals.
  6. 6

    Know that a rectangle is a four-sided polygon with four right angles

    I can identify a rectangle as a four-sided polygon with four right angles.
  7. 7

    Know that a square is a rectangle in which the four sides are of equal length

    I know a square is a rectangle in which all four sides are of equal length.
  8. 8

    Investigate the shapes made when rectangles are cut on the diagonal

    I can describe the shapes made when rectangles are cut on the diagonal.
  9. 9

    Join four right angles at a point using different right-angled polygons

    I can recognise right angles and describe what happens when they are joined at a point.
  10. 10

    Investigate and draw other polygons with right angles

    I can investigate right angles in shapes with more than four sides.

Learn how you can make the best use of Oak resources

A step-by-step guide to getting started

Get more out of Oak