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Like a Circle in a Spiral

A cheap and simple toy with lots of mathematics. Can you interpret the images that are produced? Can you predict the pattern that will be produced using different wheels?

Making Spirals

Stage: 2 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3
I imagine that many of you explored making spirals but nothing arrived on our desks! Remember that you can also email us if you produce something that can be photographed.