小学数学教师在开展几何教学时,经常遇到一种教学障碍,即学生似乎掌握了教师所说的所有几何概念,但是在做题的时候,学生往往不能结合学过的知识解决数学问题,这个几何教学问题比较普遍。本次研究将这一几何教学障碍进行分类,说明教学难点存在的原因,并给予突破难点的对策。 Primary school mathematics teachers often encounter a teaching obstacle in carrying out geometric teaching, that is, students seem to master all the geometric concepts taught by teachers, but students often can not solve the mathematical problems in combination with the learned knowledge. Geometry teaching problems are more common. This study classifies this geometric teaching barrier, explains the reasons for the existence of teaching difficulties, and gives some countermeasures to break through the difficulties.