从系统的观点来看,学生知识的掌握,能力的培养都离不开学习的主体——学生自身的智力活动内化,这是任何其他因素都无法替代的一种特殊的认知活动。教学活动是一项双向活动,学生是学习的主人,教师起着组织,引导的作用。在学习过程中,学生只有经历自己的一系列智力活动后,才能把所学的知识纳入原来的认知结构中去,成为自己的东西。因此,在课堂教学中引导学生动脑、动口、动手积极主动地摄取知识,帮助他们掌握科学的学习方法,成为学习的主人,是数学教学的 From the system point of view, students ’mastery of knowledge and ability are all inseparable from the main body of learning - the internalization of students’ own intellectual activities, which is a special cognitive activity that can not be replaced by any other factors. Teaching activities is a two-way activity, students are the masters of learning, teachers play an organizing and guiding role. During the learning process, students can only learn what they have learned in the original cognitive structure and become their own thing only through a series of intellectual activities of their own. Therefore, in the classroom teaching to guide students brains, move their mouth, take the initiative to take knowledge, to help them master the scientific learning methods, to become the masters of learning, mathematics teaching