《数学课程标准》中指出 :“学生是数学学习的主人 ,教师是数学学习的组织者、引导者和合作者。”因而我们要充分地信任学生、相信学生 ,把课堂奉还给学生。但作为组织者、引导者、合作者的我们 ,对学生的信任要把握好一个“度” ,切不能过分轻信学生 ,而忽略学生知识的发生和 The Mathematics Curriculum Standard states: “Students are the masters of mathematics learning, teachers are the organizers, guides, and collaborators of mathematics learning.” Therefore, we must fully trust the students, trust the students, and return the lessons to the students. However, as organizers, leaders and collaborators, we must hold a “degree” in the trust of students. We should not over-trust students and ignore the occurrence of student knowledge.