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小学生解决数学应用问题往往有些困难,缘于他们尚处于形象思维占主导地位阶段。小学数学教学中,借助线段图这一数学模型,可使抽象的数学问题具体化,便于学生解答。一、线段图把隐藏的数量关系显性化有的数学问题已知条件多,而且条件之间、条件与问题之间的联系不明显,需要经过比较复杂的推理才能弄清其中的数量关系,学生的思维活动在这个阶段最容易受到阻碍。如果有效利用直观图形手段辅助教学,往往可以使
Primary school students to solve mathematical problems are often somewhat difficult, because they are still in the dominant phase of the image of thinking. In primary school mathematics teaching, with the help of the mathematical model of line graph, the abstract mathematical problem can be concrete and easy for students to answer. First, the line graph to hide the relationship between the number of explicit Some mathematical problems known conditions, and conditions, the conditions and the problem is not obvious, the need to go through more complex reasoning in order to find out the quantitative relationship between, Students’ thinking activities are the most easily hindered at this stage. If the effective use of visual graphics to assist teaching, can often make