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数学课程标准指出:“数学教学活动必须建立在学生的认知发展和已有的知识经验基础之上.教师应激发学生的学习积极性,向学生提供充分的从事数学活动的机会,帮助他们在自主探索和合作交流的过程中真正理解和掌握基本
The mathematics curriculum standard states: ”The mathematics teaching activities must be based on students’ cognitive development and existing knowledge and experience. Teachers should stimulate students’ enthusiasm for learning and provide students with opportunities to engage in mathematics activities and help them Really understand and master the basics in the process of independent exploration and cooperation and exchange