So, in the face of "accidents" in the classroom, "turn left" or "turn right"? It should be said that "accidents" are different, and the countermeasures are also different. If "accidents" are of little value or of little value, then teachers can easily and skillfully let them "pass" immediately. However, if they are "accidents" that look "menacing" but may be very "predictable", teachers should regard them as valuable and make full use of them. Because this kind of "hard-to-shave head" is difficult to deal with on the surface, but in fact it is an opportunity that can be met but cannot be obtained. There are often unexpected and gratifying results. It is the so-called "it takes no effort to break through iron shoes and find nowhere to get them!" It must be made clear that only when teachers make accurate evaluation and correct selection of the "asset value" of the "accident" itself can they tactfully and beautifully "kick" this important "kick in the door"!