It has long been my opinion that you cannot teach teaching, that at least one essential part of being a good teacher is “innate” and cannot be taught.  The modern tendency is to reduce all things to a “method” or technique, but evidence (see article) is now suggesting that those “teaching methods” do little to improve teaching.  See this article on teaching and the decline of American schools.

An excerpt:

“Yet in recent years researchers have discovered something that may seem obvious, but for many reasons was overlooked or denied. What really makes a difference, what matters more than the class size or the textbook, the teaching method or the technology, or even the curriculum, is the quality of the teacher. Much of the ability to teach is innate—an ability to inspire young minds as well as control unruly classrooms that some people instinctively possess (and some people definitely do not). Teaching can be taught, to some degree, but not the way many graduate schools of education do it, with a lot of insipid or marginally relevant theorizing and pedagogy. In any case the research shows that within about five years, you can generally tell who is a good teacher and who is not.”