Diadem wrote:Knowing your subject well however, the importance of that can hardly be overstated. It doesn't matter how good your study material is, books can never replace teachers. Because books can not possibly answer all the questions students may have. Nor can they explain the same subject in 10 different ways, so that everybody will get it. The direct interaction between student and teacher is very important when explaining stuff. You can use questions to see what part a student doesn't get, why he doesn't get it, and then explain it in such a way that he will understand it.
One of my favorite teachers taught physics even though he was mainly a math teacher. He didn't know the subject very well, so when one of us asked him something he didn't know, he would say, "let's find out." Then we would do an experiment, or if that was impractical we would research it together to figure it out. It was pretty empowering because the teacher/student dynamic dissolved during those moments and we were just a group of curious people trying to figure something out. Now, I don't know if that would work for all classes and all levels of students (it was an AP class at a pretty good school with a lot of flexibility in the curriculum) but having a teacher that isn't an expert on a subject doesn't mean that the teacher can't do an excellent job teaching.