1 out of 3
Can all unit fractions be written as the sum of two unit fractions?
2 out of 3
Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?
2 out of 3
Four bags contain a large number of 1s, 3s, 5s and 7s. Can you pick ten numbers from the bags so that their total is 37?
1 out of 3
Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?
A serious but easily readable discussion of proof in mathematics with some amusing stories and some interesting examples.
2 out of 3
What does this number mean? Which order of 1, 2, 3 and 4 makes the highest value? Which makes the lowest?
2 out of 3
Can you make sense of information about trees in order to maximise the profits of a forestry company?
1 out of 3
Can you find the connections between linear and quadratic patterns?
2 out of 3
Can you work out the fraction of the original triangle that is covered by the inner triangle?
2 out of 3
Which is bigger, n+10 or 2n+3? Can you find a good method of answering similar questions?
