problem What's the Point of Squash? Age 14 to 18 Challenge level Under which circumstances would you choose to play to 10 points in a game of squash which is currently tied at 8-all?
problem Genetics Age 14 to 16 Challenge level A problem about genetics and the transmission of disease.
problem Taking Chances Age 11 to 14 Challenge level This article, for students and teachers, is mainly about probability, the mathematical way of looking at random chance and is a shorter version of Taking Chances Extended.
problem Can't Find a Coin? Age 11 to 14 Challenge level Can you generate a set of random results? Can you fool the random simulator?
problem Heavy Hydrocarbons Age 14 to 18 Challenge level Explore the distribution of molecular masses for various hydrocarbons
problem Molecular Sequencer Age 14 to 18 Challenge level Investigate the molecular masses in this sequence of molecules and deduce which molecule has been analysed in the mass spectrometer.
problem Peas in a Pod Age 14 to 16 Challenge level What is the chance this pea plant will look like its parents?
problem Squash Age 16 to 18 Challenge level If the score is 8-8 do I have more chance of winning if the winner is the first to reach 9 points or the first to reach 10 points?
game Scissors, Paper, Rock Age 5 to 7 Challenge level Play this well-known game against the computer where each player is equally likely to choose scissors, paper or rock. Why not try the variations too?
problem Probable Words Age 5 to 7 Challenge level If you asked your mum/dad/friend to take you to the park today, what sort of response might you get?