P130 - How does the size of a 'cupcake' parachute affect drop time?
A forces activity about air resistance that, unlike traditional parachute activities, yields reliable and comparable results.
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P057 - Vinegar and bicarbonate fire extinguisher demonstration
A teacher demonstration about density, floating and sinking that uses carbon dixoide gas and air, rather than solids and liquids.
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P086 - Spinning spirals
An activity where children make a spinner that uses a tea light to make it turn.
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