《数学课程标准》把解决问题这一教学内容置于核心地位,在小学数学教学中,解决问题也就是我们常说的解应用题。应用题既是小学数学教学中的重点,也是难点,尤其是低年级应用题教学,由于受年龄、知识水平等的制约,学生对应用题题意的理解有一定困难。利用线段图的直观性、具体性、形象性帮助理解题意,有助于培养学生认真审题的良好习惯,提高其分析问题、解决问题以及逆向思维能力,达到突出重点、突破难点、 “Mathematics curriculum standards” to solve the problem of this teaching content at the core, in primary school mathematics teaching, to solve the problem is what we often say solution. The application of the title is not only the focus of primary mathematics teaching, but also difficult, especially the application of the lower grades of teaching, due to age, level of knowledge constraints, the students understand the meaning of the application problems have some difficulties. The use of the intuitive, concrete and vivid image of the line segment helps to understand the questions and helps to train students to take good habits seriously and improve their ability to analyze, solve problems and reverse thinking, to achieve the key points, break through the difficulties,