随着新课程的深入,实验越来越多地走进化学课堂。而在实验教学中,常会碰到一些意外情况,它需要教师正确而迅速地作出判断,并能妥善处理,这就要求教师必须具备一定的教学机智。正如俄国教育家乌中斯基所言:“不论教育者怎样地研究了教育理论,如果他没有教育机智,他就不可能成为一个优秀的教育实践者……”。 With the deepening of the new curriculum, the experiment more and more into the chemistry class. In experimental teaching, we often encounter some unexpected situations, which require teachers to make correct and prompt judgments, and properly handle, which requires teachers must have some teaching tactics. As Usskiy, a Russian educator, put it: “Regardless of how educators study educational theory, he can not become an excellent educator if he has no educational resource.”