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Borromean zip ties Activity

by David, 31 July 2015 | 1 comments

You will need 3 zip ties A good pair of scissors An example of chain – such as a dog leash or a chain fence What to do

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Impossible plait Activity

by David, 23 September 2014 | 0 comments

A piece of felt that is platited into itself

You will need Felt sheet Good scissors Cutting the felt Cut a rectangle of felt about 6 cm wide and 20 cm long. Fold the felt in half so the short sides match up. Make two cuts, equally spaced, coming in from the folded side. Stop cutting about 2 cm before you reach the short edges of the…

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Celtic knots Activity

by David, 3 June 2014 | 0 comments

A hole in the woven pattern.

For over a thousand years, people have been drawing intricate woven patterns known as Celtic knots. As we’re about to find out, there’s a lot of maths involved!

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