课堂是教材、教师、学生、环境四因素的整合,教师与学生都是课程资源的开发者,共创共赢,形成“学习共同体”。数学教学活动必须建立在学生的认知发展水平和已有的知识经验基础上,综合运用各种教学手段激发学生的学习兴趣,同时向学生提供实践活动的机会,帮助他们学习进步,也为教师自己积累下丰富的数学经验。因此,如何有效的教学,是我们需要研究的重要课题。 Classroom is the integration of teaching materials, teachers, students and the environment. Teachers and students are the developers of curriculum resources to create a win-win situation and form a “learning community.” Mathematics teaching activities must be based on the level of cognitive development of students and existing knowledge and experience, based on the comprehensive use of various teaching methods to stimulate students’ interest in learning, while providing students with practical activities, to help them learn progress, but also for teachers Own a wealth of mathematical experience. Therefore, how to teach effectively is an important subject we need to study.