Coin investigation

Year 3 have been investigating the magnetic properties of 2p coins in their science lesson. They were given some 2p coins and a magnet. The only instruction they were given was   “Investigate the coins and record your findings on the post it notes.”

Here are some of their findings. All the coins dated 1992 and before were not attracted to the magnets, we looked this up on the internet and found out that before 1992 2p coins were made from an alloy of zinc, copper and tin. After 1992 these metals were becoming too expensive, so the metal used to make the coins was changed to copper-plated steel; because the coins now had steel in them they became magnetic!

2019-11-06T08:55:25+00:00 November 6th, 2019|Year 3|
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