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New
Lesson 2 of 10
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.
Lesson 2 of 10
New
New
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.
Lesson details
Key learning points
- A right angle is a square corner.
- A right angle is a quarter turn.
- There are right angles in buildings and the environment.
Keywords
Right angle - A quarter of a full turn, a 'square corner'.
Common misconception
Pupils may think there is only ever one right angle in an object or shape.
Provide opportunities for pupils to explore objects and shapes that have more than one right angle and show that these are not always rectangular e.g. some trapeziums can have more than one right angle.
Take time to make a right angle checker with pupils, using split pins and paper or folding paper to make a right angle. This will support pupils in exploring their environment to identify right angles.
Teacher tip
Licence
This content is © Oak National Academy Limited (2025), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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Prior knowledge starter quiz
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6 Questions
Q1.Match the keywords to the definition.
Match the keywords to the definition.
a measure of turn
to turn around a fixed point
the direction that hands travel on an analogue clock
the opposite direction to which hands travel on an analogue clock
Q2.The hands on a clock rotate in a direction.
The hands on a clock rotate in a direction.
Q3.Which arrows show a clockwise turn?
Which arrows show a clockwise turn?
c
Q4.True or false. Larger angles have longer lines and smaller angles have shorter lines.
True or false. Larger angles have longer lines and smaller angles have shorter lines.
True
Q5.An angle is the amount of around a fixed point.
An angle is the amount of around a fixed point.
Q6.Order the angles from largest to smallest.
Order the angles from largest to smallest.
Assessment exit quiz
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6 Questions
Q1.The mathematical name for a 'square corner' is a angle.
The mathematical name for a 'square corner' is a angle.
Q2.How many right angles does this shape have?
How many right angles does this shape have?
0
2
Q3.Which of the images shows a right angle?
Which of the images shows a right angle?
a
b
Q4.A right angle is the same as a turn.
A right angle is the same as a turn.
whole
half
Q5.Which of these shapes has at least one right angle?
Which of these shapes has at least one right angle?
b
Q6.Which of these capital letters do not have at least one right angle?
Which of these capital letters do not have at least one right angle?
F
H