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Babylon Numbers

Can you make a hypothesis to explain these ancient numbers?

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Ishango Bone

Can you decode the mysterious markings on this ancient bone tool?

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Pattern Recognition

When does a pattern start to exhibit structure? Can you crack the code used by the computer?

Black Box

Stage: 5 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

What does this black box do?

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The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice. More information on many of our other activities can be found here.
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NRICH is part of the family of activities in the Millennium Mathematics Project.