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数学课程标准中指出: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之上。尊重学生的生活经验和知识基础,意味着数学教学活动必须把握好学生的学习起点,在学生原有的认知水平
Mathematical curriculum standards that: mathematics teaching activities must be based on the level of cognitive development of students and existing knowledge based on experience. Respect for students’ life experience and knowledge base means that mathematics teaching activities must grasp the starting point of students’ learning, and students’ original cognition level