人教版初中数学第十八章“平行四边形”是初中学段举足轻重的一章,其涵盖的图形变化之多,前后关联的内容之广,需要掌握的运用之难,是教师们有目共睹的,如果不进行科学有效的复习,学生容易犯蒙而不知所云,教师也极易陷入以题海战术巩固来增加学生课业负担的境地,对此笔者利用一堂简单实用的课很轻松地化解了上述繁难,现叙述如下,供同行 PEP junior mathematics Chapter 18 “Parallelogram” is a pivotal chapter in the middle school. It covers a wide range of graphics, and has a wide range of contextual contexts. The difficulty in using the material is obvious to all teachers. However, if we do not conduct scientific and effective review, the students are easily guilty of ignorance, and teachers can easily fall into the situation of increasing the burden of student’s work with the tactical consolidation of the title sea. This author has used a simple and practical lesson to resolve it easily. The above difficulties are described below for the companions