Inscribing a regular hexagon in a circle
- One compass setting, seven circles — 3 tasks
- Where the six comes from — 3 tasks
- Stepping the radius round the circle — 3 tasks
- The side the compass never made — 3 tasks
- Going Deeper — 4 tasks
- Practice — 19 tasks
- Summary — 2 tasks
- Cool-down — 3 tasks
Classroom activities
Things a class does rather than writes on. Each one is a finished PDF: print it, cut it up if it says so, and hand it round.
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The Hexagon in the Circle: Do the Marks Prove It? — Mystery Picture 25–35 minutes · 4 sheets
25 strangers' hexagons stepped round a circle with the compass, every arc left on and no numbers: fill the square if the marks prove the hexagon regular, leave it white if they do not — a hexagon placed by eye, corners put in by hand, a reopened compass, or a last mark moved to make it close.