在新课标化学选修3《物质结构与性质》(人教版)中,大量涉及到物质的空间立体结构。以前的的化学学习中,空间想像基本上是一维或二维的,学生比较习惯。现在增加到三维,由于许多学生空间想像能力不强,常常不能正确地建立起空间位置关系。因此,如何培养学生的空间想像能力,让学生 In the new curriculum standard chemistry elective 3 “Material Structure and Nature” (PEP), a large number of spatial three-dimensional structures of matter are involved. In previous chemistry studies, spatial imagination was basically one-dimensional or two-dimensional, and students were more accustomed to it. Now it has grown to three-dimensional. Because many students have poor spatial imagination, they often cannot correctly establish spatial position relationships. Therefore, how to cultivate students’ spatial imagination ability for students