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这是我听朋友说的一个真实事例:有一个班的学生特别优秀,在初三时,学校为了进一步提高他们的成绩,安排了一位水平较高的教师去上他们的数学课。可是,一段时间下来,这个班的数学成绩反而下降了。什么原因?原来,那位老师有这么一个习惯,上课讲授时,总是一把题目抄写在黑板上,马上就开始了讲解,根本没有给予学生自己思考的时间。学生往往来不及看懂题目、思考问题,讲台上的老师就已经滔滔不绝地讲了起来,以至于绝大多数的学生根本跟不上他的节拍。
This is a real example I heard from my friends: one class of students was particularly good. On the third day, in order to further improve their performance, the school arranged for a higher level teacher to go to their math class. However, for a period of time, the mathematics grade of this class has instead declined. What causes? The original, that teacher has such a habit, class teaching, always a title copied on the blackboard, immediately began to explain, did not give students the time to think for themselves. Students often have time to understand the topic, think about the problem, and the teacher on the podium has been telling him so hard that the vast majority of students simply can not keep up with his beats.