Secondary Live Problems

Each time you visit the NRICH site there will be some activities which are 'live'. That means we are inviting you to send us your solutions and we will publish a selection of them, along with your name and your school's name. If you'd like to know more about what we're looking for, read this short article.

The last day for sending in solutions to these live problems is Monday 26th September.

4 by 4 Mathdokuslive

Age 7 to 14
Challenge Level

Can you use the clues to complete these 4 by 4 Mathematical Sudokus?

5 by 5 Mathdokuslive

Age 7 to 16
Challenge Level

Can you use the clues to complete these 5 by 5 Mathematical Sudokus?

6 by 6 Mathdokuslive

Age 7 to 16
Challenge Level

Can you use the clues to complete these 6 by 6 Mathematical Sudokus?

Secondary Toughnutslive

Age 11 to 18
Challenge Level

These secondary problems have not yet been solved. Can you be the first?

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.