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数学课程标准强调“尊重学生已有的知识与经验”。本学科组经历了一些实践与反思的过程后,对“尊重学生已有的知识与经验”有了更深的理解,找到了一种行之有效的方法,即沟通知识间的内在联系,从而有效扩展学生的认知结构。下面笔者便结合几个案例来谈谈常见的几种沟通角度。角度一:具体与概括的关系[案例1]常见数量关系的复习教学找出下列三栏中有联系的数量,说出数量关系。
Mathematics curriculum standards emphasize “respect for students ’existing knowledge and experience ”. After undergoing some process of practice and reflection, this subject group has a deeper understanding of “respecting the students ’existing knowledge and experience ” and finds an effective way to communicate the internal connection of knowledge, Thus effectively expanding students’ cognitive structure. Here I will combine several cases to talk about the common kinds of communication perspective. Angle 1: Specific and General Relations [Case 1] Reviewing the Relationship between Common Quantities Teaching Find out the number of connections in the following three columns and show the quantitative relationship.