本节课主讲教师的设计思路非常明确,划分为五个部分:创设情境,引入新课——实际问题,学习新知——应用知识,培养能力——归纳总结,整理提升——布置作业,巩固知识。此外,练习题和问题设置合理,非常有梯度,环环相扣,也很有创新意识。在问题3的设计过程中注重了一题多解,体现解题策略的多样性,用于发散学生的数学思维。 Teachers in this lesson are very clear in their design ideas. They are divided into five parts: creating situations and introducing new courses - practical problems, learning new knowledge - applying knowledge and cultivating abilities - summarizing and improving, arranging and improving - arranging assignments and consolidating know how. In addition, exercises and questions set reasonable, very gradient, interlocking, but also very innovative. In the design of Question 3, we pay attention to the multiple solutions of one problem and reflect the diversity of strategies for solving problems, which are used to diverge students’ mathematical thinking.