要大面积提高化学教学质量,就必须大幅度提高化学科差生能力。为此,我对三个班的38名化学科差生进行了长达两年的追踪调查。调查结果发现:差生能力低、成绩差的原因,除天资、教材编排等因素外,主要是学生学习态度不端正,学习方法不当,以及教师教学方法陈旧,偏重知识传授,忽视能力培养造成的。针对产生差生的主要原因,我改变过去以补课为主提高差生成绩的方法,抓住化学教学"一是从宏观现象出发,引导学生认识事物的微观实质,再用微观得出的化学概念去理解和解释宏观现象;二 To greatly improve the quality of chemistry education, it is necessary to greatly improve the ability of chemical science students. To this end, I conducted a two-year follow-up survey of 38 chemistry students in the three classes. The survey found that the reasons for poor students’ poor ability and poor performance, apart from factors such as talents and teaching materials, are mainly students’ learning attitudes are not correct, learning methods are improper, and teachers’ teaching methods are outdated, emphasis on knowledge transfer, neglect of ability training. In response to the main causes of poor students, I changed the way I used to make up classes to improve the performance of poor students. I seized on chemistry teaching. First, starting from macroscopic phenomena, students were guided to understand the micro essence of things and then to use microscopic chemical concepts. Understand and explain macroscopic phenomena; two