Talk about my personal experience, I hope it will help you. In fact, the school recruits teachers and wants to evaluate the lecturer's basic teaching skills within half an hour, not the proficiency of teaching. Therefore, in addition to Mandarin and chalk, we can also make efforts in the following aspects:

First, in the process of preparing lessons, grasp three aspects. First, the knowledge structure of this lesson, when preparing lessons, you can read through the whole lesson first and list the main knowledge points of the whole lesson, and you can probably sort out the main knowledge points and their connections within 5 minutes; Second, start with the main knowledge points and choose a main knowledge point. Of course, it is best to prepare the knowledge points that you are most familiar with (don't prepare the whole article), so as to be small and precise, and you can see your ability and level through the clarification and practice of a knowledge point; The third is the choice of examples or exercises, which should be closely related to the concept and the examination content should be as simple as possible.

Second, during the lecture, pay attention to two aspects. First, the speed of speech (many speakers speak too fast) should be slowed down appropriately; The second is to treat reviewers as students, and try to express them in vivid language to make them easy to understand.