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一、问题的提出 九年义务教育全日制初级中学数学教学大纲已明确地把培养学生应用所学知识解决简单实际问题的能力作为初中数学教学的一个主要目标,众所周知,列方程(组)解应用题贯穿初中数学学习的始终,占用课时最多,每个学期都得涉及,它是培养学生数学应用能力的最好素材,也是主要素材。 1992年“教育进展国际评估组织”公布的有关第二次国际教育成就结果表明,我国学生数学测试在纯而又纯的数学题方面的平均正确率为80％,名列参加测试的21个国家和地区之首。但对涉及实际情景的问题,成绩并不好,一道题中用图给出甲、乙两地间的三条路线,且用数字标明每一条路线的
First, the issue of nine-year compulsory education full-time junior high school mathematics syllabus has clearly cultivated students the ability to apply the knowledge to solve simple practical problems as a major goal of mathematics teaching in junior high school, as we all know, the application of equations (group) solution The topic runs through the mathematics study of junior middle school. It occupies the most hours and has to be involved every semester. It is the best material for cultivating students’ mathematics application ability, and it is also the main material. The results of the second international education achievement announced by the International Assessment Organization for Educational Progress in 1992 showed that the average correct rate of mathematics tests for Chinese students in pure and pure mathematics is 80%, ranking 21 countries participating in the test. The first place in the area. However, the results are not good for the issues involving actual situations. In the title, three routes between A and B are shown and the numbers indicate each route.