课堂教学不可能是一个完全遵循教学预设的课堂表演剧,而是一个动态的即兴生成系列片。教学过程中学生提出的新问题、闪现的新想法、呈现的新思路往往是执教者无法预设的,而如何有效处理这些预设之外的生成则是对教师基本功扎实与否和应对机智水平高低的检验,恰当处理必将为课堂教学增光添彩。当然,这就要求教师善于把握教学动态,用心捕捉学习活动中的瞬间生成,精心筛选有利于促进学生 Classroom teaching can not be a classroom show completely follow the teaching preset, but a dynamic series of improvisation generated. In the process of teaching, new problems, new ideas and new ideas presented by the students often can not be pre-determined by the instructors. How to effectively deal with these preconceived notions is a solid foundation for teachers’ solid foundation and coping skills The test, the appropriate treatment will certainly add luster to classroom teaching. Of course, this requires that teachers be good at grasping the dynamics of teaching, intentions to capture the instantaneous generation of learning activities, carefully selected is conducive to promoting students