For example
Push a gate halfway open and it makes an angle with the fence.
In Grade 4
Children sort corners into square, smaller than square and wider than square before they measure a single angle in degrees.
Watch out for
Children often think longer arms make a bigger angle. The angle is the amount of turn, so drawing the two lines longer changes nothing at all.
Say it at home
Point at corners around the house and ask whether each one is a square corner, a narrower one or a wider one.
Try it together
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