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Legend has it that Greek philosopher and mathematician Pythagoras of Samos gave this cup to his students when he served them all wine. Any students who chose to be greedy and pour wine into their cups to a level higher than permitted would watch the entire contents of the cups drain away!

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A wonderful practical joke that can be used to teach science over and over again. Legend has it that Greek philosopher and mathematician Pythagoras of Samos gave this cup to his students when he served them all wine. Any students who chose to be greedy and pour wine into their cups to a level higher than permitted would watch the entire contents of the cups drain away! Have fun investigating the siphoning effect in this memorable activity.