【教学内容】人教版五年级下册27、28页。【教学重、难点】感知物体体积,掌握体积和体积单位知识。能正确应用体积单位估算常见物体的体积。【教学过程】一、创设情境激趣,导入新课(教师出示课件,动画演示)师:同学们,我们来观察一种变化活动,你能根据屏幕上的变化说一说是什么变成了什么?小结“:点”(构成“线”)———“线”(围成“面”)——“面”(围成“体”)——“体”的过程。(板书:点、线、面、体)(出示课件) 【Teaching content】 PEP fifth grade volume 27, 28 pages. [Teaching heavy, difficult] perception of object size, volume and volume control unit knowledge. Correctly apply volume units to estimate the volume of common objects. Teacher: Students, let’s observe a kind of change activity, you can according to the change on the screen to say what is turned into What? Summary “: point ” (constitute “line ”) “line ” (enclosed “surface ”) - “surface ” - “body ” process. (Board book: point, line, surface, body) (produce courseware)