一、问题的提出化学总复习阶段,在复习知识点的基础上,练习一定量的习题,使学生达到将所学知识转化为解题能力的目的是很有必要的。但在教学过程中,常遇到如下情况: 1.学生练习过,教师讲评过,隔一段时间重现,仍有大部分学生无从下手。 2.不少学生学习刻苦,除完成课内练习,还主动买课外习题来啃,但每次考试成绩却不理想。 First, the issue of the total chemical review stage, based on the review of knowledge points, practice a certain amount of exercises, so that students achieve the goal of transforming what they have learned into a problem-solving ability is very necessary. However, in the course of teaching, we often encounter the following situations: 1. Students practiced, teachers commented, and reappeared after a certain period of time, most students still have no way to start. 2. Many students study hard, in addition to completing exercises in class, but also take the initiative to buy extra-curricular exercises, but each test score is not ideal.