Three people chose this as a favourite problem. It is the sort of problem that needs thinking time - but once the connection is made it gives access to many similar ideas.
Weekly Problem 41 - 2016
The diagram shows a square, with lines drawn from its centre. What is the shaded area?
If Clara spends £23 on books and magazines, how many of each does she buy?
Two of the four small triangles are to be painted black. In how many ways can this be done?
Jack and Jill run at different speeds in opposite directions around the maypole. How many times do they pass in the first minute?
This article offers you practical ways to investigate aspects of your classroom culture.
The NRICH Team's beliefs about teaching mathematics, and the ideas that have inspired us.
