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Exploring the Mathematisation of Probability
The Wisdom of the Crowd
Age 11 to 16
Challenge Level 
Who's closest to the correct number of sweets in a jar - an individual guess or the average of many individuals' guesses? Which average?
Capture and Recapture
Age 11 to 16
Challenge Level
How do scientists or mathematicians estimate the size of a population of wild animals?
How Confident Are You?
Age 11 to 16
Challenge Level
What proportion of people make 90% confident guesses which actually contain the correct answer?
Louis' Ice Cream Business
Age 14 to 16
Challenge Level
Should Louis go for the safer options, hoping to limit his losses, or would he be better off with a riskier strategy, focusing on maximising his profit?
To Insure or Not to Insure
Age 14 to 16
Challenge Level
Should you insure your mobile phone? It rather depends on whether you focus on the long-term pay-off or the effect of a single event.