Do you notice anything about the solutions when you add and/or subtract consecutive negative numbers?
There are 78 prisoners in a square cell block of twelve cells. The clever prison warder arranged them so there were 25 along each wall of the prison block. How did he do it?
Jack's mum bought some candles to use on his birthday cakes and when his sister was born, she used them on her cakes too. Can you use the information to find out when Kate was born?
The second of three articles on the History of Trigonometry.
How many different lengths is it possible to measure with a set of three rods?
Can you solve the system of equations to find the values of x, y and z?
All you need for this game is a pack of cards. While you play the game, think about strategies that will increase your chances of winning.
Take a look at the video showing areas of different shapes on dotty grids...
You may have seen magic squares before, but can you work out the missing numbers on this magic star?
