重视思维与经验碰撞 巧用数形结合思想解题

Attaching Importance to the Collision between Thinking and Experience and Skillfully Useing the Thought of Combining Number with Shape to Solve Problems

数形结合思想可以将抽象的问题条件转化为直观形象的符号信息,有利于发展学生的空间想象和逻辑推理能力。教师应以数形结合思想为基础,通过构建动态直观表征让学生理解算理算法,通过绘制生活信息让学生类比数量关系,通过分析图形结构让学生感知数据意义,充分发挥数形结合的教学优势。

The thought of combination of number and shape can transform abstract problem conditions into visual symbolic information, which is conducive to the development of students’ spatial imagination and logical reasoning ability.Based on the idea of combination of number and shape, teachers should make students understand the algorithm by constructing dynamic and intuitive representation, make students compare the relationship between number and shape by drawing life information, and make students perceive the meaning of data by analyzing graphic structure, so as to give full play to the teaching advantages of combination of number and shape.