俗话说:“万事开头难。”进入高中,刚接触立体几何,确实有点头疼。一个难点由平面如何过渡到立体,也就是说,立体几何要求我们有空间想像能力,能根据给定的立体图形在头脑中还原成它的本来面目。另一个难点是在立体教学中如何结合平面几何,也就是何处该是空间关系,何处又是平面关系,刚开始的时候,往往难以区分。再者,就是学习本身的难题,学科名词、学科术语、学科体系等知识和技能的问题。“好的开头就是成功的一半”。因此,如何培养空间 As the saying goes: “Everything is hard at the beginning.” Into high school, just contact the three-dimensional geometry, really a little headache. A difficult transition from the plane to the three-dimensional, that is to say, three-dimensional geometry requires that we have space to imagine the ability to stereotypes given in the mind to restore its true colors. Another difficulty is that how to combine plane geometry in stereo teaching, that is, where is the spatial relationship and where is the plane relationship, which is often difficult to distinguish from the beginning. Furthermore, it is the problem of learning their own problems, subject nouns, terminology, subject system and other knowledge and skills. “Good beginning is half of success ”. Therefore, how to cultivate space