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在小学数学中,数形结合,有利于分析题中数量之间的关系,丰富表象,拓寬思路,化繁为简,化难为易,迅速找出解决问题的方法,提高分析问题和解决问题的能力。一、利用几何图形巧解题如一张方桌有4个角,锯掉一个角,还剩下几个角?想一想,有几种答案。根据题意,可引导学生通过讨论画出几何图形(如下图),看有几种不同的锯法。
In primary school mathematics, the combination of numbers and forms is conducive to the analysis of the relationship between the number of questions, enrich the appearance, broaden the thinking, simplification, simplification and easy, quickly find ways to solve the problem, improve the analysis of the problem and solve the problem ability. First, the use of geometric figure Qiao problems such as a square table with four corners, saw a corner, leaving a few corners? Think about it, there are several answers. Based on the topic, students can be guided through the discussion to draw the geometry (see below), to see there are several different saw method.