全日制普通高级中学教材《必修》第一册第五章《物质结构——元素周期律》在全书中,乃至中学化学教学中,占有十分重要的地位。它的准确把握对中学化学知识体系的建立有着衔接作用,可以提高学生在化学方面的分析能力、应用能力。如何做好这一单元的教学工作,历来受到老师们的关注。以下浅谈笔者对这一部分的认识。 Full-time ordinary senior high school textbook “Compulsory” Volume I of Chapter V of the “material structure - the periodic law of the law” in the book, and even secondary chemistry teaching, occupies a very important position. Its accurate grasp of the establishment of middle school chemistry knowledge system has a convergence effect, which can improve students’ ability of chemical analysis and application. How to do a good job teaching this unit has always been the concern of teachers. The following talk about the author’s understanding of this part.