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一、问题的提出笔者在历届高三立体几何专题复习中经过仔细调查发现,大约有80%左右的学生只要遇到立体几何问题,不论是让解决什么问题的,都是不假思索的建系求坐标,首选向量法,哪怕是特别简单的问题,学生也是如此.向量法果真神奇,引领那么多学生和老师为其倾倒.之所以我们提倡和推崇向量法,是因为它不仅是通性通法,更因为它在现代数学中具有重要的作用.因此,有些老师就产生疑虑:这样下去,会不会失去立体几何原有的魅力,从而削弱对学生空间想象
First, the author put forward the author in the previous high school geometry review of three topics after careful investigation found that about 80% of students as long as the three-dimensional geometry problems encountered, whether it is to solve any problems, are thinking without thinking of the establishment of system coordinates, The first choice of vector method, even if it is a particularly simple problem, the same is true for students. Vector method is really magical, leading so many students and teachers for its dumping. The reason why we advocate and promote vector method, because it is not only Tonglian Tong law, more Because it has an important role in modern mathematics, some teachers have doubts: In this way, will not lose the original charm of the three-dimensional geometry, thus undermining the student space imagination