正方体的表面展开图问题是初中数学教学中的难点,中考题也多次出现,这种题有利于培养学生的空间观念,也有利于培养学生的实践、探索、交流能力。同一个正方体图形按不同的方式展开得到的平面展开图一般是不一样的,常见的正方体展开图究竟有几种不同的形状?有哪些基本特征呢? The problem of the surface expansion of the cube is a difficult point in junior high school mathematics teaching. The test questions also appear many times. This kind of questions helps to cultivate the students ’space concept and helps to cultivate students’ practice, exploration and communication skills. The same plan of a square in different ways to expand the plane expansion plan is generally not the same, the common cube expansion figure exactly how many different shapes? What are the basic features?