论文部分内容阅读
高中电学实验是高考难点和易错点,如何进行这部分的复习教学,帮助学生掌握电学实验原理,引导学生知识迁移,提高学生解题能力,笔者认为重点从以下三点进行复习教学:一、对电学实验原理和方法进行充分解析实验原理是实验设计的依据和思路,复习中必须明确实验原理,才能真正掌握实验.实例电源电动势和内阻的测量原理实质分析原理原理是闭合电路欧姆定律E=U+Ir,变量是路端电压和干路电流,实验关键是通过电路实现对U和I的测量,列
High school electrical experiment is difficult and error-prone entrance, how to carry out this part of the review teaching, to help students master the principle of electrical experiments, guide students to knowledge transfer, improve students’ ability to solve problems, I think the focus of the review from the following three points: First, The principle and method of electrical experiment to fully analyze the experimental principle is the basis and idea of experimental design, the experimental principle must be clear in the review, in order to truly grasp the experiment.Mechanical electromotive force and internal resistance measurement principle analysis principle principle is the closed circuit Ohm’s law E = U + Ir, variables are the terminal voltage and the trunk current, the key to the experiment is through the circuit to achieve the measurement of U and I, the column