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Number and algebra

  • The Number System and Place Value
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Working mathematically

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Advanced mathematics

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For younger learners

  • Early Years Foundation Stage

Being Resilient - Statistics

In a Box

Age 14 to 16
Challenge Level Yellow starYellow star

Chris and Jo put two red and four blue ribbons in a box. They each pick a ribbon from the box without looking. Jo wins if the two ribbons are the same colour. Is the game fair?

Odds and Evens

Age 11 to 14
Challenge Level Yellow star

Are these games fair? How can you tell?

Substitution Cipher

Age 11 to 14
Challenge Level Yellow star

Find the frequency distribution for ordinary English, and use it to help you crack the code.

M, M and M

Age 11 to 14
Challenge Level Yellow star

If you are given the mean, median and mode of five positive whole numbers, can you find the numbers?

Wipeout

Age 11 to 16
Challenge Level Yellow starYellow star

Can you do a little mathematical detective work to figure out which number has been wiped out?

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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.

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

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