Toughnuts - Try These Unsolved Problems

Make Those Braceletslive

Age 7 to 11 Challenge Level:

Find all the ways of arranging the beads on this bracelet, using just two colours.

Different by One

Age 14 to 16 Challenge Level:

Can you make lines of Cuisenaire rods that differ by 1?

Standard Index Form Matching

Age 14 to 16 Challenge Level:

Can you match these calculations in Standard Index Form with their answers?

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.