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一、问题的引出不等式的证明是中学数学教学的一个难点,如何突破这一难点是值得研究的一个问题,我在一次不等式复习课后布置了一道思考题,批阅作业后发现全班只有两个同学各采用一种方法进行了证明,作业的实际情况告诉我,如果草率处理对这道题的讲解,必将失去这道题的教学功能.因此,我决定把这道题的讲评课变为点拨课来上,并取得可喜的效果.下面是本节课的实录.
First, the problem leads to inequality of proof is a difficult high school mathematics teaching, how to break through this difficulty is worth studying a problem, I arranged a question after an inequality review, after reviewing the operation found only two classes The students adopted a method to prove that the actual operation of the homework told me that if we explain the problem sloppyly, we will certainly lose the teaching function of this problem. Therefore, I decided to change the comment class on this subject to Point to class, and achieved gratifying results. The following is a record of this lesson.