两个或两个以上物体相互连接(绳子或弹簧相连,叠放,并排等)参与运动的系统称为连接体。连接体问题是高考考察的重点内容,也是困扰许多学生的一大难题。应用变式教学可以使教学内容层次感强,低起点,学生易于理解接受,由浅入深,注重解题方法的迁移和训练。同时强化了整体法和隔离法在受力分析中的应用。 Two or more objects connected to each other (rope or spring connected, stacked, side by side, etc.) involved in the movement of the system known as the connector. Connector problem is the focus of the study tour, but also plagued many students a major problem. Application of variant teaching can make the teaching content of a strong sense of hierarchy, low starting point, students easy to understand and accept, from shallow to deep, focusing on problem-solving methods of migration and training. At the same time, it strengthens the application of the whole law and isolation law in stress analysis.