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在物理教学的过程中,常常会遇到一些教材讨论较浅或没有讨论的实际问题。怎样把这些疑难问题向学生讲清楚,讲得既生动、有趣,又不犯科学性的错误,这就要求我们教师必须具有坚实的理论基础,要不断地学习,加深拓宽知识面。同时在设计教学方案时,恰当地将一些相关知识和处理问题的方法渗透到课堂教学中去,力求居高临下,深入浅出,地对问题进行讲解。现以高中《物理》第三册(选修)“人造地球卫星”一节为例,来谈一谈教师备课应达到的深度。
In the process of physics teaching, there are often some practical problems that the discussion of teaching materials is shallow or not discussed. How to explain these difficult questions to students clearly and vividly speaks an interesting and scientific mistake. This requires that our teachers must have solid theoretical foundations, and must continue to learn and deepen and broaden their knowledge. At the same time, when designing the teaching plan, some relevant knowledge and methods for dealing with problems are infiltrated into the classroom teaching. They strive to be condescending, explain the profound things in a simple way, and explain the problems to the ground. Let’s talk about the depth to be achieved by teachers in preparation for a lesson in the “Manual Earth Satellite” section of Book 3 (Elective) in High School Physics.