【教学内容】北师大版小学数学四年级下册第七单元第二课《方程》。【教材分析】《方程》是学生学习代数初步知识的开始。本课是在“用字母表示数”的基础上进行教学的,通过本课的教学,要使学生了解方程的含义,会用方程表示简单的数量关系。本课的教学在学生日后学习等式的性质、解方程及运用方程解决简单的实际问题的过程中起着承上启下的作用。它是学生学习用方程解决问题的起始课,在本单元中具有重要地位。为了使学生体会方程是刻画现实世界的一个有效的数学 【Content】 Beijing Normal University version of primary school mathematics fourth grade volume seventh unit second lesson “equation.” 【Textbook Analysis】 “equation” is the beginning of the students learn the initial knowledge of algebra. This lesson is taught on the basis of “using alphanumeric characters ”. Through the teaching of this lesson, to enable students to understand the meaning of equations, equations will be used to express simple quantitative relationships. The teaching of this course plays an important role in learning the nature of equations, solving equations and applying equations to solve simple practical problems in the future. It is a starting lesson for students to learn equation solving problems and has an important place in this module. In order to make students understand the equation is an effective mathematical description of the real world