How to choose materials, whether the classroom links are compact, whether the difficulties are prominent, whether the problems can be solved, whether the extracurricular extension is achieved, and whether the teaching objectives are achieved. In addition, the arrangement of time and the connection of content are also an aspect of the main course. From the teacher's point of view, the classroom regulation ability is not strong and the teaching methods are diversified. There are also teachers' basic skills, blackboard design, natural teaching style, standard Mandarin and lively and interesting language. And whether modern educational technology tools can be used correctly.

Whether to grasp the key points and break through the difficulties