Search

Can you work out the irrational numbers that belong in the circles to make the multiplication arithmagon correct?

Liam's house has a staircase with 12 steps. He can go down the steps one at a time or two at time. In how many different ways can Liam go down the 12 steps?

Can you make sense of the three methods to work out what fraction of the total area is shaded?

Try entering different sets of numbers in the number pyramids. How does the total at the top change?

Nearly all of us have made table patterns on hundred squares, that is 10 by 10 grids. This problem looks at the patterns on differently sized square grids.

Can you use the information to find out which cards I have used?

How do different drug-testing regimes affect the risks and payoffs for an athlete who chooses to take drugs?

Julia refines our model, and the interactivity offers a chance to simulate the outbreak of an infectious disease, recognising that not everyone is the same.

This problem explores the biology behind Rudolph's glowing red nose, and introduces the real life phenomena of bacterial quorum sensing.