一、线段图在应用题教学中的作用 借助线段图教学应用题,是小学数学教学行之有效的辅助手段。线段图形象、直观地反映了应用题的数量关系,通过认识、画线段图的训练,有利于调动学生思维的积极性,提高学生分析、解决实际问题的能力。 二、线段图的基本形式 线段可根据不同的数量关系采用不同形式的画法。一般有两种基本形式,一是单线式的线段图,二 First, the role of line drawing in the teaching of application problems With the help of line drawing teaching questions, is an effective adjunct to primary school mathematics teaching. Line graph images, intuitively reflect the number of the relationship between the number of questions, through understanding, drawing line drawing training is conducive to mobilize the enthusiasm of students thinking and improve students' ability to analyze and solve practical problems. Second, the basic form of line segment Line segments can be based on different numbers of relations using different forms of painting. There are two basic forms, one is a single line segment, two