I didn't put this in the Education forum because I feel the level is probably too high. I have a physics degree and an education degree, but due to my inability to tolerate students who simply don't care about learning, I became an electrician instead. My colleagues and I were having a discussion about technical training, and the conversation drifted toward what really causes conduction to occur, and I piped up, having taken several semi-advanced solid state physics courses. What I realized is, when I tried to explain conduction in simplified terms of k-space and band structure, it just sounded like the Bohr model, when in reality it's quite different. Any ideas how to effectively explain the concepts to someone with a rudimentary understanding of Ohm's law, resistivity, Kirchoff's rules, and basic trig?