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教学目的1.经历串、并联电路的电流关系和电压关系的理论分析过程。2.理解串、并联电路的电阻关系。提高逻辑思维能力。3.提高综合运用欧姆定律、电路串并电路规律以及分析解决问题的能力。教学重点:理解分压和分流的原理,并能熟练运用教学难点:学生对功率的分配关系难以理解教学媒体:电流计(表头),定值电阻若干,安培表,伏特表,学生电源,电键,导线。一、新课引入二、新课教学(一)串联电路和并联电路
Teaching Objectives 1. Experience string, parallel circuit current and voltage relationship between the theoretical analysis process. 2. Understand the resistance of the series and parallel circuits. Improve logical thinking ability. 3. Improve the integrated use of Ohm’s law, the circuit string and the circuit law and analyze the ability to solve problems. Teaching emphasis: understanding the principle of partial pressure and diversion, and can skillfully use teaching Difficulties: the distribution of students power is difficult to understand the teaching media: ammeter (header), set a number of resistance, ammeter, voltmeter, student power supply, Key, wire. First, the new lesson into two, the new course teaching (a) series circuit and parallel circuit