[主持人按数学新课程,倡导自主探索、动手实践、合作交流、阅读自学等数学学习的新方式.数学课上的历来的探索,总是教师问一句学生答一句,或者是教师启发几句后,就交给合作小组来完成.本设计的作者认为:解题的思路与具体的解法是两个概念,解决问题的一种思路,往往会有多个具体 [The host presses a new mathematics course and advocates a new way of learning mathematics such as independent exploration, hands-on practice, cooperation and communication, reading self-study, etc. The historical exploration in mathematics class always asks a student to answer one sentence, or it is a teacher’s inspirational sentence Afterwards, it is handed over to the cooperation team. The author of this design thinks that the idea of ​​solving the problem and the specific solution are two concepts. There is often more than one specific way to solve the problem.