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Make a fountain that doesn’t need an electric pump. This fountain was designed by Heron, a Greek teacher and inventor in 1st Century CE. Safety: This activity involves using an electric drill, a sharp knife and a hot glue gun. Adult help is required.

Carnivorous plants eat insects, but what to do if there are not many insects about? Answer: find a new form of food!

A magnifying glass can bend light waves to make an object look bigger. Can you make a magnifying glass for sound waves too?