物理模型的构建可以帮助学生对型异质同的问题迅速找出解题思路,摆脱情境的干扰,很快抓住问题的关键,从而提高解题的效率.但在实际教学中如果忽略对模型内涵的深刻理解,往往会带来负面效应,产生思维僵化,容易使人不注意题中条件的变化而套用已有的物理模型得出 The construction of the physical model can help students to quickly find the solution to the problem of the type of heterogeneity, to get rid of the interference of the situation and quickly grasp the key of the problem so as to improve the efficiency of solving the problem.However, in practical teaching, A deep understanding of the connotation often brings negative effects, resulting in rigidity of thinking, making it easy for people to apply the existing physical model without paying attention to the conditions of the problem