《数学课程标准》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、合作者。”现代教学论也认为,学生是学习的主体,学生积极主动参与教学过程是有效学习的必要条件。引发学生积极主动参与、自主学习是为了激发学生的内因,使其与外因形成合力产生最佳效应。提倡引 The standard of mathematics curriculum states: “Students are the masters of mathematics learning, and teachers are the organizers, guides and collaborators of mathematics learning.” Modern pedagogy also holds that students are the main body of learning and that it is effective for students to actively participate in the teaching process The necessary conditions for learning. Trigger students to take the initiative to participate in, independent study is to stimulate the students’ internal causes, with the external cause to produce the best effect. Promote lead