曹才翰教授指出：“空间想象能力主要指空间知觉、空间观念与想象力的结合．”［１］笔者认为建立起学生的空间知觉与观念是培养空间想象能力的关键．空间概念的建立历来是中学数学教学中一大难点．因为在立体几何教学中通常画出的是直观图，不象平面几何的图形那样真实，... Professor Cao Caihan pointed out: “The spatial imagination ability mainly refers to the combination of spatial perception, spatial concept and imagination.”[1] The author believes that establishing students’ spatial perception and concepts is the key to cultivate spatial imagination ability. The establishment of the concept of space has always been a major difficulty in mathematics teaching in middle schools. Because in the three-dimensional geometry teaching is usually drawn intuition, not as real as the graphic geometry,...