新课程体系下的课堂教学更关注学习者自己的探索、思考与体验过程,而学生对某个预设性的实验现象常显得麻木不仁。我们在实验中常遇到各种“意外”现象,却能引起学生极大的兴趣。这些“意外”应该深入挖掘、甄别。符合教学目标,有利于学生可持续发展的“意外”需好好利用,因 Classroom teaching under the new curriculum system pays more attention to the learner’s own process of exploration, thinking and experience, and students often seem insensitive to a certain pre-existing experimental phenomenon. We often encountered in the experiment a variety of “accidental” phenomenon, it can arouse great interest in students. These “accident ” should dig deeper, screening. In line with the teaching objectives, is conducive to sustainable development of students “accident ” need to make good use of, because