Have you ever had a professor/teacher that lectures with an overhead projector and pre-prepared transparencies? Do they use a piece of opaque paper to cover up most of the transparency, revealing only the part they want you to see at that time?
*Charlie Brown voice* I can't stand it!
My physics professor lectures like that. The trouble is, he takes so long to explain between key points that my brain shuts down and I'm completely unable to understand what he's saying. I know that, conceptually, I should be able to understand, but it's like there's a physical limit in my brain that prevents me from slowing down to his pace.
The solution? DITCH THE PAPER! Never, ever use it again. That way, I can look at the whole of the transparency and figure out for myself what he's trying so clumsily to explain.
So what's the point of that paper? What does it accomplish? Who would even think that that would be good lecturing practice?
Ok, I've ranted. Now maybe I can write rationally about it to my professor.