Alison and Charlie are playing a game. Charlie wants to go first so Alison lets him. Was that such a good idea?
Articles about mathematics which can help to invigorate your classroom
Charlie likes tablecloths that use as many colours as possible, but insists that his tablecloths have some symmetry. Can you work out how many colours he needs for different tablecloth designs?
The NRICH Stage 5 weekly challenges are shorter problems aimed at Post-16 students or enthusiastic younger students. There are 52 of them.
Can you find some Pythagorean Triples where the two smaller numbers differ by 1?
Invent shapes with different numbers of stable and unstable equilibrium points
Use graphs to gain insights into an area and perimeter problem, or use your knowledge of area and perimeter of rectangles to gain insight into the graphs.
Powers of 2 and logs were the keys to solving our Function Pyramid.
Go to last month's problems to see more solutions.
In this article, the NRICH team describe the process of selecting solutions for publication on the site.
An article describing what LTHC tasks are, and why we think they're a good idea.