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We find out more about the charity's work to support maths education in prisons.

We review the seventh of this year’s nominees for the Book of the Year

Did you solve it?

Ride a phantom parabola into our spring 2019 issue. Billiards, maths, tiles, mistakes, plus all your favourite regulars.

When you get tired of using your calculator for numbers, why not use it for words?

A quick look at how to get the most bang for your buck the next time you're in a bidding war