详尽深入的备课,是上好一课的基础,然而,成功的讲授,决非是对教案的机械的照本宣科。一堂课上,总有些地方是教师即时的补充和阐发,这些没有落实在教案上的新内容,习惯上称之为课堂发挥。有经验的教师,都很注重课堂发挥。在讲授的过程中,不失时机地把一些即时的新见解补充进去,能开拓讲授的思路和深度,使学生受到启迪。例如一位教师在讲完《内蒙访古》中“胡服骑射”的历史故事后,作了这样的即兴发 Extensive in-depth preparation of lessons is the basis for a good lesson. However, successful teaching is by no means a mechanical copy of the teaching plan. In a class, there are always places where teachers immediately supplement and elucidate, and these new contents that are not implemented in lesson plans are customarily called classroom play. Experienced teachers all pay attention to classroom play. In the course of teaching, it is timely to add some immediate new insights into the lectures, which can open up the teaching ideas and depth and inspire students. For example, a teacher made such an impromptu after he finished the historical story of “Hu Shi Yi Zuo” in the “Internal Visit to Ancient China”.