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使中学生学会应用方程和方程组的知识解各种类型的应用问题,是中学数学教学中的重点,也是难点.从初中一年级学习一元一次方程开始,就应着重培养学生布列方程和解简单应用题的能力.打好基础,对以后应用不等式、函数等知识解其他类型的应用题,将提供有利条件.应用方程和方程组的知识解应用题,关键的一步就是要审清题意,适当选择未知数,列出方程或方程组,即:审题——选元——列代数式——列方程——解方程——检验——结论.从
So that high school students learn to apply equations and equations of knowledge to solve various types of application problems in high school mathematics teaching is also the key and difficult.From the first grade of junior high school to learn a one-time equation, we should focus on training students Bray equation solution and simple application The ability to lay a good foundation for the future application of inequalities, functions and other knowledge to solve other types of application problems, will provide favorable conditions.Application of equations and equations of knowledge solution application questions, the key step is to clear the questions, appropriate Select unknowns and list equations or equations, ie: Review - Element - Column Algebra - Column Equation - Solve Equation - Test - Conclusion. From