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一次教研组活动,听了一节题为“电功率公式的应用”(人教版初中物理八年级下册第八章第二节部份内容)的物理课,感触颇深。一、课堂实录导入新课和出示学习目标后,教师问:我们上节课学习了哪两个与电功率有关的公式?有少部份学生在小声回答,教师没有关注。自答:我们学了P=W/t和P=UI两个公式。教师继续说:那么通过这两个公式我们能推导出哪些公式呢?大家看:
A teaching and research group activities, listened to a section titled “Electric Power Formula Application ” (PEP Junior High School Physics eighth grade eighth chapter second part of the content) of the physics class, deep feelings. First, the class record After the introduction of the new class and show the learning objectives, the teacher asked: We learned in the last two classes and electric power-related formula? A small number of students whispered answer, the teacher did not pay attention. A: We learned two formulas P = W / t and P = UI. Teachers continue to say: So what formulas can we derive from these two formulas?