苏教版选修4-4的第一节,课题为如何建立直角坐标系.从立意的角度经过一番设计,笔者就此作了一次尝试,以下介绍的是这次公开课的教学过程及思考,抛砖引玉,欢迎同行批评指正.1学情分析建系,是解析几何的起始步骤.人们常常强调:建系要恰当.原因如下:解析几何往往给人以“死算”的印象,于是如何克服代数运算的繁琐,显 The first section of the euphemism version of elective 4-4, the subject for how to establish a rectangular coordinate system.From the conception of a certain design, the author made an attempt to this, the following is the teaching process and thinking of this open class, Initiate the criticism, peer criticism is welcome .1 academic analysis of the establishment of the Department, is the initial step to analytic geometry.It is often stressed: building department should be appropriate for the following reasons: analytic geometry often give people the impression of How to overcome the cumbersome and obvious algebraic operation