What is the relationship between the angle at the centre and the angles at the circumference, for angles which stand on the same arc? Can you prove it?
Six balls are shaken. You win if at least one red ball ends in a corner. What is the probability of winning?
What are the possible areas of triangles drawn in a square?
In this game, you can add, subtract, multiply or divide the numbers on the dice. Which will you do so that you get to the end of the number line first?
Can you find the area of a parallelogram defined by two vectors?
Start with two numbers and generate a sequence where the next number is the mean of the last two numbers...
This 100 square jigsaw is written in code. It starts with 1 and ends with 100. Can you build it up?
