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[this is a copy of my post to that group, just to round this thread off]


Regarding how we avoid students thinking, I got quite a nice answer during the workshop actually. The presenter pointed out that with forces, no-one thinks that forces really are arrows [now there’s an interesting research project in its own right…] so students should be encouraged to view this very much as an abstraction.


If that is the case, is this a situation where a computer screen (like a mobile phone battery symbol) actually provides a better representation than a beaker of coloured water?

Or perhaps even a worksheet with bits to colour in?

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