Sample+2.5

I chose this as my “medium” sample because it didn’t show great understanding. The descriptions of the earlier models (Earth, fire, wind, and water and solid sphere) show genuine understanding. The nuclear and the orbital models are OK, they seem to be writing what they think they should be writing. The final slide about the quantum mechanical model seems to go straight from the source to the slide. There is little evidence any stop-over in the mind. I’m OK with this because the quantum mechanical model is complex, but I didn’t get any questions from my students about this model. I doubt that they really understand it.