教材简析:“圆锥的体积”是在学生对圆柱、圆锥的特征有了很深的认识,能熟练计算圆柱体积、表面积、侧面积的基础上进行教学的。通过往等底等高的圆柱和圆锥倒水或倒沙的实验,得到圆锥的体积计算公式,以旧引新,让学生主动感知圆锥体积是与它等底等高圆柱体积的三分之一。通过教学,使学生初步学会解决一些与圆锥形物体的体积有关的实际问题。 Teaching material analysis: “Cone volume ” is in the students on the cylindrical, conical features have a deep understanding of the cylinder can be proficient in volume, surface area, side area based on teaching. By going to the bottom of the contour cylinder and conical pouring or sand pouring experiment, the conical volume formula is obtained, the old introduction of new, so that students take the initiative to perceive the conical volume is equal to its bottom cylinder volume and so on one-third . Through teaching, students are initially taught to solve some practical problems related to the volume of conical objects.