教材简析:“体积和体积单位”是人教版数学五年级下册的学习内容,是在学生已经初步认识了长方体和正方体的特点和表面积的基础上进行教学的。体积对学生来说是一个新概念,从认识平面图形到立体图形,是学生继续学习立体图形的延伸。教材通过学生熟悉的“乌鸦喝水”的故事、石块放入盛水的杯子里的实验等,以生动形象的方式,为学生体会物体占有空间,理解体积的概念提供了丰富的感性经验。教学中,教师要充分利用和 Textbook analysis: “volume and volume unit ” is the content of the fifth grade of the PEP teaching volume, is based on the students have initially learned the characteristics and surface area of ​​the cuboid and cube based on teaching. Volume is a new concept for students, from understanding the plane graphics to three-dimensional graphics, students continue to learn three-dimensional graphics extension. Through the students familiar with the “crow drink” story, the stones into the cup of water experiments, vivid image of the way for students to understand the object possession of space, to understand the concept of volume provides a rich sensibility experience. Teaching, teachers should make full use of