New
New
Year 5
Use the unit of degrees as a standard unit to measure angles
I can use the unit of degrees as a standard unit to measure angles.
New
New
Year 5
Use the unit of degrees as a standard unit to measure angles
I can use the unit of degrees as a standard unit to measure angles.
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Lesson details
Key learning points
- Angles are measured in degrees
- Degrees measure rotation
Keywords
Angle - An angle is a measure of turn. It shows how far something has rotated.
Degree - A degree is a unit of measure for angles.
Arc - An arc is part of any curve. They can be used to show the angle between two lines.
Common misconception
Pupils think that the larger the size of the arc between the two lines, the larger the angle must be.
Ensure pupils compare the same angle where the arc has been drawn on either closer to the vertex or further away from the vertex. Generalise that the position of the arc doesn't matter, though it is convention to draw it closer to the vertex.
Allow pupils to develop a sense of angle size by providing them with different sized angle tools to estimate and measure angles in their own contexts.
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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Starter quiz
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6 Questions
Q1.
Look at the image. This shape has right angle(s).
Q2.
This shape has one pair of parallel sides. True or false?
True
Q3.
Complete the sentence. A rhombus has vertices.
Q4.
Look at the hands on this clock face and the arrow. The angle formed is __________.
acute
a right angle
obtuse
Q5.
Look at the hands on this clock face and the arrow. The angle formed is __________.
acute
a right angle
reflex
Q6.
This is a trapezium. Look carefully at the vertices and the angles inside the shape. Complete the sentence. There are obtuse angles in the trapezium.
Exit quiz
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6 Questions
Q1.
How many degrees are equal to one right angle? °
Q2.
A full turn is equal to four right angles which is ___.
90°
180°
300°
Q3.
The angle shown is 50° which means it is an angle.
Q4.
The angle shown is 140° which means it is an angle.
Q5.
What is the measurement of the angle shown here? °
Q6.
Which image shows an angle of approximately 30°?
A
C
Additional material
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