1 out of 3
Is it the fastest swimmer, the fastest runner or the fastest cyclist who wins the Olympic Triathlon?
3 out of 3
In the café, your ice cream selection can't include a combination that someone else has chosen. What could these seven children have chosen?
1 out of 3
This group tasks allows you to search for arithmetic progressions in the prime numbers. How many of the challenges will you discover for yourself?
2 out of 3
What is special about the difference between squares of numbers adjacent to multiples of three?
1 out of 3
Draw some quadrilaterals on a 9-point circle and work out the angles. Is there a theorem?
1 out of 3
A game in which players take it in turns to choose a number. Can you block your opponent?
1 out of 3
Can you use the information to find out which cards I have used?
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.
2 out of 3
Explore the meaning of the scalar and vector cross products and see how the two are related.
The second of three articles on the History of Trigonometry.
