立体几何是研究现实世界中物体的形状、大小与位置关系的数学学科。采用直观感知、操作确认、思辨论证、度量计算等方法认识和探索几何图形及其性质。三维空间是人类生存的现实空间,认识空间图形,培养和发展学生的空间想象能力、推理论证能力、运用图形语言进行交流的能力以及几何直观能力是高中阶段数学必修系列课程的基本要求。一、学生在立体几何学习中的困难分析学生在初中学过平面几何,掌握了大量的平面几何知识,进 Stereo geometry is a mathematical discipline that studies the shape, size and position of objects in the real world. Using intuitive perception, operational confirmation, speculative argumentation, measurement and other methods to understand and explore the geometry and its nature. Three-dimensional space is the real space for human survival. It is the basic requirement of the high school mathematics compulsory courses to recognize the space figure, cultivate and develop students’ spatial imagination ability, reasoning and demonstration ability, ability to communicate in the graphic language and geometric intuition. First, the students in the three-dimensional geometry of the difficult analysis Students learned in the junior high school geometry, master a large number of plane geometry, into