Draw angles accurately using a protractor
I can draw angles accurately using a protractor.
Draw angles accurately using a protractor
I can draw angles accurately using a protractor.
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Lesson details
Key learning points
- A protractor can be used to draw angles.
- Protractors have two scales from 0 to 180 degrees.
- Start from zero when reading the scale on a protractor.
- Line the protractor up with one of the lines forming the angle.
Keywords
Protractor - A protractor is an instrument used to measure angles.
Angle - An angle is a measure of turn.
Polygon - A polygon is a 2D shape made up of three or more straight lines.
Common misconception
Pupils draw a straight line to begin to create their angle and then place the centre of the protractor in the middle of the straight line.
Encourage pupils to place the middle spot of the protractor on one end of the straight line as this will make it easier to mark on the second line to create the vertex once the protractor has been removed.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.A triangle has how many angles?
Q2.The tool used to measure the size of an angle is known as:
Q3.The name of the line we draw to mark an angle is known as __________.
Q4.Tick the polygons.
Q5.Which image shows the protractor placed correctly to measure the angle?
Q6.Read the protractor scale to measure the angle. °
Assessment exit quiz
6 Questions
Q1.Order the steps for drawing an angle.
Q2.Tick the correct statements. To draw an angle, you should:
Q3.The zero line of a 45° angle has been drawn. Which line and arc would be most appropriate to use to create the angle?
Q4.The zero line of a 25° angle has been drawn. Which line and arc would be most appropriate to use to create the angle?
Q5.The zero line of a 130° has been drawn. Which line and arc would be most appropriate to use to create the angle?
Q6.Jun says that he has drawn four polygons which all have a 30° angle marked.
Tick the shapes that are correct.
