1问题的提出加速度是力学中的重要概念,也是物理学中难懂的概念之一.在学生以往的生活实践中,与加速度有关的现象描述并不多,这给学生理解加速度概念带来了一定的困难.赵凯华和罗蔚茵教授在《新概念物理教程·力学》中就明确指出:“这是人类认识史上最难建立的概念之一,也是每个初学物理的人最不易真正掌握的概念.”笔者在教学中从学生已有的认知结构出发,通过创设问题情景,激发学生的认知需要;利用 1 PROBLEM PROPOSITION Acceleration is an important concept in mechanics and one of the concepts that are difficult to understand in physics.In the students’ past life practice, there are not many descriptions of acceleration-related phenomena, which have brought students the concept of acceleration Certain difficulties.Zhao Kaihua and Professor Luo Wei Yin in the “New Concept Physics Tutorial · Mechanics” made it clear that: “This is one of the most difficult to establish in the history of human knowledge concept, but also for each beginner physics most difficult to really grasp the concept of . ”The author in teaching from the students ’existing cognitive structure, through the creation of problem scenarios, to stimulate students’ cognitive needs; use