用类比法应对“会而不对”——《电表改装》为例

Using analogy to deal with "can but not be"——Electricity meter modification as an example

电表改装是高中电学实验的基础,但由于学生对电表的结构和改装缺乏深度认识与理解,因此不能很好地处理电学实验中的相关问题,造成学生"会而不对"。运用类比法将电表改装与曹冲称象、杆秤原理相比较,为学生搭上脚手架降低学生知识接受难度,启发学生达成的思考与认知,推动教学效率的提升。

Meter refitting is the basis of electrical experiment in senior high school.However,due to the lack of in-depth understanding and understanding of the structure and modification of electric meters,students can’t deal with the relevant problems in electrical experiments well,resulting in students"being able to but not right".Using analogy method,this paper compares the electric meter refitting with Cao Chong’s weighing and steelyard principle,builds scaffolding for students,reduces the difficulty of students’knowledge acceptance,inspires students’thinking and cognition,and promotes the improvement of teaching efficiency.