Working Systematically - Advanced

Ante Up

Age 16 to 18
Challenge Level

Use cunning to work out a strategy to win this game.

A Long Time at the Till

Age 14 to 18
Challenge Level

Try to solve this very difficult problem and then study our two suggested solutions. How would you use your knowledge to try to solve variants on the original problem?

Stage 5 Cipher Challenge

Age 16 to 18
Challenge Level

Can you crack these very difficult challenge ciphers? How might you systematise the cracking of unknown ciphers?

Sorted

Age 14 to 18
Challenge Level

How can you quickly sort a suit of cards in order from Ace to King?

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.
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NRICH is part of the family of activities in the Millennium Mathematics Project.