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新课程标准明确提出:数学教学活动必须建立在学生的认识发展水平和已有的知识基础上,强调从学生的已有知识经验出发,让学生亲身经历将实际问题抽象成数学模型并进行应用与改进的过程。
The new curriculum standard clearly put forward: mathematics teaching activities must be based on the level of cognitive development of students and existing knowledge, emphasizing starting from the students’ existing knowledge and experience, allowing students to experience the practical problems abstracted into mathematical models and applications Improved process.