在传统的数学教学中,模型演示对培养学生的空间想象能力和提高学生学习几何的兴趣曾发挥过很大的作用.但是许多几何问题单用模型演示有一定的局限性.多媒体作为现代先进教学手段进入课堂,以其独特的动态效果以及图、文并茂等特点吸引着学生,可促进数学教学过程最优化,进而达到 In the traditional mathematics teaching, the model demonstration has played a great role in cultivating the students’ spatial imagination ability and improving students’ interest in learning geometry. However, many geometric problems have only a limited use of model presentation. Multimedia as a modern advanced teaching Means to enter the classroom, attracting students with their unique dynamic effects and features such as drawings and texts, can promote the optimization of mathematics teaching process, and then achieve