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Problems, Questions, and Puzzles to spark discussion and argument in the maths classroom.

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Here's a screen grab of one of @ddmeyer's videos: Penny Circle.




If this were a 0.75" circle, the penny would fit perfectly. If it's 1" then there would be a lot of wasted space. What sizes of circle would be best for packing in 0.75" pennies with as little wasted space as possible?


.: [GEOM], [Dan Meyer], [3ACT].
that's it.