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.

Lesson details

Key learning points

  1. Angles are measured in degrees
  2. Degrees measure rotation

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.

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.

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 (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Loading...

6 Questions

Q1.
Look at the image. This shape has right angle(s).
An image in a quiz
Correct Answer: 1, one
Q2.
This shape has one pair of parallel sides. True or false?
An image in a quiz
True
Correct answer: False
Q3.
Complete the sentence. A rhombus has vertices.
Correct Answer: 4, four
Q4.
Look at the hands on this clock face and the arrow. The angle formed is __________.
An image in a quiz
acute
a right angle
obtuse
Correct answer: reflex
Q5.
Look at the hands on this clock face and the arrow. The angle formed is __________.
An image in a quiz
acute
a right angle
Correct answer: obtuse
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.
An image in a quiz
Correct Answer: 2, two

6 Questions

Q1.
How many degrees are equal to one right angle? °
An image in a quiz
Correct Answer: 90, ninety, 90 degrees
Q2.
A full turn is equal to four right angles which is ___.
An image in a quiz
90°
180°
300°
Correct answer: 360°
Q3.
The angle shown is 50° which means it is an angle.
An image in a quiz
Correct Answer: acute
Q4.
The angle shown is 140° which means it is an angle.
An image in a quiz
Correct Answer: obtuse
Q5.
What is the measurement of the angle shown here? °
An image in a quiz
Correct Answer: 180, one hundred and eighty, 180 degrees
Q6.
Which image shows an angle of approximately 30°?
A
Correct answer: B
C

Additional material

Download additional material
We're sorry, but preview is not currently available. Download to see additional material.