Or search by topic
Each time you visit the NRICH site there will be some activities which are 'live'. This means we are inviting students to send us solutions, and we will publish a selection of them, along with each student's name and their school, a few weeks later. If you'd like to know more about what we're looking for, read this short article.
The last day for sending us solutions to these live problems is Monday 17th June 2024.
If you are given the mean, median and mode of five positive whole numbers, can you find the numbers?
Here is a machine with four coloured lights. Can you develop a strategy to work out the rules controlling each light?
Polygons drawn on square dotty paper have dots on their perimeter (p) and often internal (i) ones as well. Find a relationship between p, i and the area of the polygons.