Plato's Protractor™
Six Mathomat investigations to build a robust understanding of angle based on arc length
The activities
- Plato’s protractor I. Introducing the idea of openness
- Plato’s protractor II. Measuring angles in quips
- Plato’s protractor III. From quips to degrees, using the TGT
- Plato’s protractor IV. From quips to radians
- Plato’s protractor V. Radians simplify circles
- Plato’s protractor VI. Radians and Mathomat
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