重要化工产品的工业制法在中学化学教材中占一定的比重,而且大都是比較重要的教材。如何把这些教材教好,使学生牢固而确切地掌握,还是許多教师在教学上有待解决的一个問題。在教学中常遇到的情况是:教学过程中似乎沒有特別大的困难,但是学生学了以后印象不深刻,遺忘率很高(特別是生产流程和设备)。从这几届浙江省學生高等学校統一考試試卷上来看,化工生产流程和設备的回答情况是很不能令人滿意的,是平均成績較差的問題之一。这說明这一类型課的教学很值得我們重視和研究。学生学习这些課以后,比較普遍的反映是:感到易懂难記,抓不住重点,找不出知識的规律。他們认为要 The industrial system of important chemical products accounts for a certain proportion of high school chemistry textbooks, and most of them are more important textbooks. How to teach these teaching materials so that students can grasp firmly and exactly is still a problem that many teachers have to solve in teaching. What is often encountered in teaching is that there seems to be no particular difficulty in the teaching process, but the students are not impressed with the impression and have a high degree of forgetfulness (especially the production process and equipment). From these several examination papers of Zhejiang Province Unified Examination for Higher Education Institutions, the situation of chemical production process and equipment is unsatisfactory, and it is one of the problems with the worse average grade. This shows that this type of teaching is worth our attention and research. Students learn these lessons later, the more common reflection is: feel hard to understand, unable to grasp the key, can not find the law of knowledge. They think so