Just saw your other post where you mentioned that you have to teach beginner students. Sorry I can't be of more help -- I taught myself most of what I know, and teachers, as of yet, have never had to teach me theory or other rudiments of piano playing. They would assign me pieces and I would learn them, but not well enough of course, so the lessons revolved around trying to learn to play them well.I mentioned that teachers had called me a "beginner" -- these were concert pianists who were possibly being mean or referring to anyone without professional technique as a "beginner/amateur". For the record, I'm certainly not a beginner as most people perceive the term.