教学中小组学习能否取得实效,教师在课前充分的准备工作起着关键作用。在研究备课策略时,教师必须在三个方面反复斟酌,即合作学习内容的选择、分组的原则与方法、课堂上的同步指导。 The effectiveness of learning medium and small group learning, teachers in the preparatory work before the full play a key role. In the preparation of lesson planning strategy, teachers must repeatedly consider three aspects, namely, the choice of cooperative learning content, the principles and methods of grouping, synchronized instruction in the classroom.