Hello, I am also a teacher in a counseling institution now, which happens to teach mathematics. You talk about junior high school mathematics. I personally think that no matter what kind of knowledge you talk about, you can make it clear and understand it. However, it is very important to clarify the relationship between knowledge. By analogy, a question should be related to how this knowledge point will generally give a question, how to give a question, and what knowledge to use to give a question. You can talk about one or two more middle school questions. I have been in this business for two or three years, and I still have some experience more or less. Ask again if you don't understand anything! It's hard to say a word or two clearly. See the proof of triangle congruence. That's quite fun, and so is the quadratic function!

If it helps, adopt it!