“一元一次方程”这一章在初中代数中占有十分重要的地位,它是解其它方程或方程组的基础。事实上,解各种方程或方程组,通常都要通过消元和降次,最后将它们归结为解一元一次方程。要通过一元一次方程的教学,把学生学过的有关知识应用到实际中去;要使学生初步使用代数中的方程去反映现实世界中的相等关系,并逐步体会代数方法的优越性;要向学生渗透把未知转化为已知的辩证思想,培养学生分析问题解决问题 The chapter “One Elementary One Equation” plays a very important role in junior high school algebra. It is the basis for solving other equations or equation groups. In fact, to solve various equations or equations, it is usually necessary to pass elimination and decrement, and finally they are reduced to solving a unitary first-order equation. Through the teaching of one-dimensional equations, the relevant knowledge that students have learned should be applied to the actual situation; students should use the equations in algebra to reflect the equal relationships in the real world, and gradually realize the superiority of algebraic methods; Students infiltrate the unknown into the known dialectical thinking, train students to analyze problems and solve problems