Estimate acute and obtuse angles using the standard unit of degrees
I can estimate acute and obtuse angles using the standard unit of degrees.
Estimate acute and obtuse angles using the standard unit of degrees
I can estimate acute and obtuse angles using the standard unit of degrees.
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Lesson details
Key learning points
- You can estimate angles by comparing to a right angle of 90 degrees.
- Half a right angle is 45 degrees.
- One and a half right angles are 135 degrees.
Keywords
Estimate - To estimate is to find a value that is close enough to the right answer, usually with some thought or calculation involved.
Degree - A degree is a unit of measure for angles.
Common misconception
Pupils significantly over or under-estimate the size of angles, particularly when the initial line of the angle is not vertical or horizontal.
Encourage pupils to rotate the angle so that one of the lines is vertical or horizontal, or if possible, look at the angle from a different point of view which may help to view a line of the angle from a vertical or horizontal position.
To help you plan your year 5 maths lesson on: Estimate acute and obtuse angles using the standard unit of degrees, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 5 maths lesson on: Estimate acute and obtuse angles using the standard unit of degrees, download all teaching resources for free and adapt to suit your pupils' needs.
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Explore more key stage 2 maths lessons from the Angles: compare, name, estimate and measure angles unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
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Lesson video
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Starter quiz
6 Questions
Exit quiz
6 Questions
