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第十八章“电功率”是继“欧姆定律”之后对电学知识的又一重要应用。本章是初中物理的重点章节之一,也是难点之一。本人在复习基础知识时,摒弃传统的归纳知识条文或建立知识框架的方式来罗列知识点的方法,把电能和电功率的知识与生活中的电吹风联系起来,收到了意想不到的教学效果。一、以电吹风为载体,巧设知识情境课堂引入了生活中学生熟知的电吹风,吸引了学生的眼球,让他们感觉到课堂设计的新颖之处,从而把学生从枯燥无味的纯
Chapter 18 “Electric Power” is another important application of electrical knowledge following “Ohm’s Law.” This chapter is one of the key chapters of junior high school physics, but also one of the difficulties. When reviewing the basic knowledge, I abandon the traditional way of inducing knowledge or establishing a knowledge framework to list knowledge points. By linking the knowledge of electricity and electric power with the hair dryer in my life, I have received unexpected teaching results. First, the hair dryer as a carrier, cleverly set up the knowledge of the situation The classroom introduced the well-known students in the hair dryer, attracted the attention of students, so that they feel the novelty of classroom design, so that students from the boring pure