I was wondering what would happen if you introduced a proto-quantitative version of Drude just after you’d done solids liquids and gases through kinetic particle theory.
Why do we reserve this ‘scientific’ model for Higher Tier GCSE students? Why not just give it straight to the Year 7 students? I reckon a good few of them would cope with it, certainly as well as they do with pizza delivery models.
As for superconductors, yes you’re right. It doesn’t do that, but that’s pretty rare pre 19 isn’t it? As for semiconductors, can it be fudged quite simply by explaining the links between the ‘atoms’? Not sure. Getting quite detailed now on just one bit of the map, I suppose.