高一学生经过初中两年的平几学习,逻辑思维能力和空间想象力得到了一定程度的发展,但一旦进入三维空间的学习,原来的知识结构和思维能力都不能很快适应新的研究对象,这就形成了学习立几入门难的两大因素。在生源较差的三类学校,立几入门难的问题更为突出。我们这个教改组,一二三类学校的老师都有。如何搞好立几入门教学,体会也不尽相同,这里谈一些共同认识。一、发展空间想象力平几学习中学生对图形直观作用的依赣性极强,立体图形虽有立体感,但失去了真实性,这样要认识图形的性质特征,对图形的直观依赖性就大大削弱。我们所西的空间图形实际上是具有抽象意义的平面图形,因此应要求学生能很好地读图、识图。 After high school a few years of junior high school two years of learning, logical thinking ability and spatial imagination has been a certain degree of development, but once you enter the three-dimensional space, the original knowledge structure and thinking ability can not quickly adapt to the new research object , Which formed the two major factors that make learning difficult to get started. In the poor source of three types of schools, the establishment of a few difficult to enter the issue even more prominent. Our teaching reform group, one or two types of school teachers have. How to set up a few basic teaching, experience is not the same, here to talk about some common understanding. First, the development of space Imagination Just a few learning students visual effects on the graphics in accordance with the extremely strong, three-dimensional graphics, though stereoscopic, but lost its authenticity, so you want to recognize the nature of the graphics, intuitive dependence on the graphics greatly weaken. The spatial graphics we have in mind are in fact abstract graphic graphics, so students should be asked to read diagrams and diagrams well.