长期以来，从国内到国际，从中学到大学，在有机化学教学中，讲授有机化合物结构时，都使用“球棍”模型。即用黑色的圆球代表碳原子，用较小的白色圆球代表氢原子，用直棍或弯棍代表化学键。我在使用这套模型讲授甲烷和环己烷等饱和烃的立体结构时，效果很好。但在讲授烯烃和快 For a long time, from domestic to international, from middle school to university, organic chemistry teaching, teaching organic compound structure, the use of “stick” model. That the black ball on behalf of carbon atoms, with smaller white balls on behalf of hydrogen atoms, straight sticks or curly sticks on behalf of chemical bonds. I was very good at using this model to teach the three-dimensional structure of saturated hydrocarbons such as methane and cyclohexane. But teaching olefins and fast