所谓题组,就是将内容联系密切、题目形式相似、思维方法相近、解法基本相同或有联系的题目串联在一起构成一组题。它具有鲜明的对比性、层次性、迁移性和实效性,对巩固所学知识、纠正思维偏差、增强解题能九,形成知识网络、发展思维能力等都发挥着独特的作用。下面,笔者例举一个题组练习的教学设计和大家一起分享。这是《异分母分数加减法》中的一个题组练习的 The so-called problem group, that is, the content is closely related to the topic in the form of similar thinking similar to the solution is basically the same or related topics in series together to form a group title. It has a distinctive contrast, hierarchy, mobility and effectiveness. It plays a unique role in consolidating what has been learned, correcting deviations in thinking, enhancing problem solving, forming knowledge networks and developing thinking skills. Here, I give an example group teaching practice design and share with everyone. This is the “different denominator fraction addition and subtraction method” in a group exercise