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Grouping Goodies

Pat counts her sweets in different groups and both times she has some left over. How many sweets could she have had?

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Odd Tic Tac

An odd version of tic tac toe

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Break it Up!

In how many different ways can you break up a stick of 7 interlocking cubes? Now try with a stick of 8 cubes and a stick of 6 cubes.

What Number

Stage: 1 Short Challenge Level: Challenge Level:2 Challenge Level:2

You could look at one piece of information at a time. For example, which numbers are under 25?
Can you now look at another piece of the information and narrow down the options?
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.