Teaching must be a cycle, from lecture-study-practice-test-supplement, from chapter to unit to the whole book, from small cycle to large cycle, so that knowledge can be learned from teachers to students and finally digested. Any teacher must follow this rule, and we must strictly abide by the teaching routine, and we must not be careless at all.
Teaching must be grasped-grasping the classroom, grasping the discipline, grasping the time and grasping the implementation. Being a teacher is a basic principle. If you want to have a good teaching result in the end, you must grasp these key points.