“圆柱”是六年级立体图形教学的重点,“认识圆柱”是教学“圆柱”的起点。其主要内容包括:圆柱的认识、圆柱的组成、特征和圆柱侧面、底面及其之间的关系。学生对圆柱认识到位与否直接关系到圆柱表面积和体积的教学,因此,从某种意义上说“认识圆柱”是“圆柱”单元的重点中的重点。教学圆柱的认识大多采用实验操作和 “Cylinder ” is the sixth grade three-dimensional graphics teaching, “Know the cylinder ” is the starting point of teaching “Cylinder ”. The main contents include: understanding of the cylinder, cylinder composition, characteristics and cylindrical side, bottom and the relationship between them. Students recognize the position of the cylinder is directly related to the teaching of the surface area and volume of the cylinder, therefore, in a sense, “understanding cylinder” is the focus of the “cylinder” unit. Most of the teaching of cylindrical understanding of the experimental operation and use