What is special about the difference between squares of numbers adjacent to multiples of three?
Can you use the information to find out which cards I have used?
Four bags contain a large number of 1s, 3s, 5s and 7s. Can you pick any ten numbers from the bags so that their total is 37?
The second of three articles on the History of Trigonometry.
Jennifer Piggott and Steve Hewson write about an area of teaching and learning mathematics that has been engaging their interest recently. As they explain, the word 'trick' can be applied to mathematical activity in many ways.
Can all unit fractions be written as the sum of two unit fractions?
In the café, your ice cream selection can't include a combination that someone else has chosen. What could these seven children have chosen?
Can you make sense of information about trees in order to maximise the profits of a forestry company?
