Our STEM challenge today involved making metal float.
We discussed properties of metals and liquids, then predicted whether coins would float or sink. We tried dropping them into water from different heights; on their flat surfaces and their edges....but, in each case, the coins sank.
We repeated this process with aluminium foil and that sank too.......
How, then, could we possibly combine coins and foil to make them float?
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| Keeping the foil flat worked to carry 5 coins |
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| Flat foil flooded easily |
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| Steep sides prevented water entering |
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| Distributing the weight evenly helped |
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| There was a lot of discussion |
