看了贵刊登载陈兴火昆老师写的《最多只能看到三个面吗?》一文,颇有会心之处。记得去年,我也是无意中发现这个奇怪的现象,我可以看到正方体的4个面!我当时和同事讨论这个问题,有的一笑了之,也有不屑一顾的。我在与许多数学教师讨论交流时,不少人都对我提出疑问,也有笑话我的,更多的是否定。现在看 Read the magazine published by Chen Xing fire Kun teacher wrote “can only see three face?”, A rather understandable place. I remember last year, I also inadvertently found this strange phenomenon, I can see the square of the four faces! I was discussing this issue with my colleagues, and some laugh, but also disdain. When I was talking to many math teachers, many people questioned me, others joked about me, and more often said no. Watch now