Here is a particularly gross science experiment we have just done with some 9 year olds.  They absolutely loved it and thought it was the funniest thing ever.  Originally conceived as a genuine scientific investigation (for 2009 Red Nose Day), it is now a great website for engaging  kids and helping them understand about variables, sampling, conducting interviews, constructing bar graphs and writing up their conclusions.  And yes, there was a gender bias in the level of laughter and enjoyment which I shall leave you to guess!

(skip over the screen which collects data about gender/age. location etc – that was only relevant when the original experiment was live)

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