This problem is designed to help children to learn, and to use, the two and three times tables.
Can you make arrange Cuisenaire rods so that they make a 'spiral' with right angles at the corners?
Explore Alex's number plumber. What questions would you like to ask? What do you think is happening to the numbers?
Can you make a spiral for yourself? Explore some different ways to create your own spiral pattern and explore differences between different spirals.
Generate three random numbers to determine the side lengths of a triangle. What triangles can you draw?
How many winning lines can you make in a three-dimensional version of noughts and crosses?
How have "Warmsnug" arrived at the prices shown on their windows? Which window has been given an incorrect price?
What shapes should Elly cut out to make a witch's hat? How can she make a taller hat?
Moiré patterns are intriguing interference patterns. Create your own beautiful examples using LOGO!
A few thoughtful solutions here where pupils have thought carefully about the angles that they had observed.
Go to last month's problems to see more solutions.
In this article for teachers, Liz Woodham describes the criteria she uses to choose mathematical games for the classroom and shares some examples from NRICH.
This is our collection of favourite mathematics and sport materials.
Here are a collection of games from around the world to try during the holidays or the last few weeks of term.