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Hugh Duncan returns with the long-awaited prequel in which he further explores the geometric patterns hidden behind the fractions.

Colin Beveridge looks at different designs for 2- and 3-dimensional tiles

We explore the concept of emptiness in set theory, and explain how zero went from "nothing" to "something"

Some summations seem strangely slippery...

Have you read the best of the blog?

Making gingerbread Platonic solids, Fröbel stars and Christmas flexagons