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一元一次方程的应用问题,在初中数学中是个重点,也是难点。根据题意分析题中数量关系列出方程,对初中一年级学生来说.不是一下子就能掌握的。其中一条重要原因,是学生刚从小学上来,他们熟悉列算式解应用题,开始接触列方程的方法还不太习惯,这就造成许多学生往往用列算式解应用题的方法进行思考和分析。而所列出的“方程”,也只不过是在算式前边添上“x”而已。如
The application of one-dimensional equations is a key and difficult point in junior mathematics. According to the quantitative relationship between the questions in the questions, the equations are listed. For junior students in the junior middle school, it is not immediately possible to master the equations. One of the important reasons is that students have just come from elementary school. They are familiar with the application of mathematical formulas, and they are not used to the method of formulating equations. This has caused many students to think and analyze using the formulae to solve problems. The list of “equations” is simply the addition of “x” before the formula. Such as