一、渗透转化思想方法,提高学生解决问题的能力数学问题的求解过程,实质上是由未知向已知转化、生疏向熟悉转化、复杂向简单转化、困难向容易转化的过程.还有不同数学问题之间的相互转化,转化思想方法贯穿数学教学过程的始终.例1如图1,锐角△ABC的高CD和BE相交于O点.求证:B0·EO=CO·DO.证明∵CD和BE是△ABC的高, First, the infiltration of ideas and methods to improve the ability of students to solve Mathematical problems in the process of solving the problem, in essence, from unknown to known transformation, stranger to familiar with the transformation, complex to simple transformation, difficult to easy transformation process. There are different mathematics The conversions and transformations between questions are the same throughout the mathematics teaching process.Example 1 As shown in Figure 1, the acute CD △ ABC and BE intersect at point O. Proof: B0 · EO = CO · DO. BE is △ ABC high,