Nice resource to study probability
A nice BBC page about the probabilities that lie behind the FA Cup Draw.
Great maze generator. Good opportunities to discuss algorithms and trial and error when you press ‘solve’. Awesome.
This great upload by numberphile covers the football pitch birthday probability problem. In essence, the probability of sharing a birthday with someone in a football game (including the ref) is more than 50%. Weird but true. You can make a whole lesson out of this, (hint: use Google Calculator for the maths bit, as a normal calculator will die trying), then finish the lesson asking everyone in the class to declare their birthday. Chances are, there will be two the same!