Estimating Angles Demonstration This resource provides animated demonstrations

If something moves, how do we measure it? What units could we use? A

To measure turn, we split a full turn (a circle) into 360 pieces. Each

Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated

Slides: 22

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Estimating Angles – Demonstration This resource provides animated demonstrations of the mathematical method. Check animations and delete slides not needed for your class.

If something moves, how do we measure it? What units could we use? A ruler. centimetres, metres. If something turns, how do we measure it? What units could we use? A protractor. degrees

To measure turn, we split a full turn (a circle) into 360 pieces. Each piece is 1 degree. 90° Why 360?

To measure turn, we split a full turn (a circle) into 360 pieces. Each piece is 1 degree. 150° Why 360?

To measure turn, we split a full turn (a circle) into 360 pieces. Each piece is 1 degree. 40° Why 360? 360 has lots of factors: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360 So, we can divide a full turn easily.

How much turn? 60°

How much turn? 90°

How much turn? 140°

How much turn? 200°

How much turn? 250°

How much turn? 330°

How much turn? 355°

How much turn? 65°

How much turn? 280°

How much turn? 22°

How much turn? 184°

How much turn? 149°

How much turn? 334°

How much turn? 115°

How much turn? 225°

How much turn? 235°

Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths. co. uk