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Each time students visit the NRICH site there will be some activities which are 'live'. That means we are inviting students to send us their solutions and we will publish a selection of them, along with their name and 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 27 November.
It's easy to work out the areas of most squares that we meet, but what if they were tilted?
By selecting digits for an addition grid, what targets can you make?
Draw some quadrilaterals on a 9-point circle and work out the angles. Is there a theorem?