摩擦力,无论从它的产生、种类、还是大小变化等情况的判断,对不少学生来说都是比较难缠的问题。在面对摩擦力问题时,怎样帮助学生在解答摩擦力相关问题时有法可依,是每个物理老师都要面对的问题。在我的教学实践中,发现引导学生在面对摩擦力问题时,坚持从“是否产生”、“哪种类型”、“是否变化”三个方面厘清条件,摆脱摩 Friction, no matter from its production, type, or the size of the judgment changes, for many students are more difficult problems. In the face of friction problems, how to help students solve problems related to the friction law, is that every physical teacher must face the problem. In my teaching practice, we find that to guide students in the face of friction issues, adhere to the conditions from the three aspects of “is produced ”, “what type ”, “is change ”,