在立体几何教学中我们常思考:教学情境如何创新?教学手段如何丰富?教学环节如何紧凑?教学效益如何显著?细细想来,数学教学所追求的高境界源于教师心中的教学意识,只有良好的教学意识的引领,我们才能达到简于形而精于神,将复杂的数学知识教得简单明了,突出知识的核心内容,让学 In the three-dimensional geometry teaching, we often think: How to innovate the teaching situation? How to enrich the teaching method? How to make the teaching process compact? How to make the teaching benefit remarkable? The thought that the high level of the mathematics teaching is from the teachers’ Of the teaching awareness, we can achieve the simple but good at God, the complex mathematical knowledge to teach simple and clear, highlight the core content of knowledge, to learn