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Archimedes and Numerical Roots

The problem is how did Archimedes calculate the lengths of the sides of the polygons which needed him to be able to calculate square roots?

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Cuisenaire Environment

An environment which simulates working with Cuisenaire rods.

Changing Places

Age 14 to 16 Challenge Level:

Once started on the journey home why is every third move important?

What is special about those counters that don't move?