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不深入理解物理概念的物理意义,不掌握分析解决物理问题的方法,是形成疑难问题的根源.在物理教学中,教师针对学生常犯的典型错误,精心设计物理问题,把物理概念、物理问题与物理方法三者有机地融为一体,引导学生在分析问题的过程中深化概念,在解决问题的过程中掌握方法,这是解决疑难问题、提高教学效益的有效途径.本文通过对运动学三个疑难问题的讨论,旨在揭示这一教学规律.一、如何由运动方程计算质点的位移和路程
Not understanding the physical meaning of physical concepts in depth and not understanding the methods to solve physical problems are the root causes of difficult problems.In the teaching of physics, the teachers carefully designed the physical problems according to the typical mistakes often made by students, and put the physical concepts, physical problems And the physical methods of three organically integrated to guide students in the process of analyzing the problem of deepening the concept of the process of solving problems in the grasp of the method is to solve difficult problems and improve the effectiveness of teaching an effective way.Through the kinematics of three A difficult question to discuss, to reveal the teaching of law.First, how to calculate the displacement and distance of the particle by the equation of motion