教学内容:六年制第十一册第89—93.教学目的:1.使学生理解物体体积的概念.2.认识体积的计量单位.3.学会长方体、正方体体积的计算方法.教学难点:长方体、正方体公式的推导.教学过程:一、引出课题出示木块(一个长方体、一个正方体).提问: Teaching content: six years of eleventh volumes of 89-93. The purpose of teaching: 1. To enable students to understand the concept of object volume .2. Recognize the volume of units of measurement .3 learn cuboid, cube volume calculation method. Difficulties in teaching: Cuboid, cube formula derivation. Teaching process: First, lead the subject to produce wooden block (a cuboid, a square). Question: