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作为基础教育学科之一的物理教学如何从应试教育转向素质教育?加强学生的观察能力和动手能力的培养,是全面提高学生素质必不可少的一个方面.笔者觉得将初中物理电磁继电器的教学进行创新和拓展,有利于我们进行素质教育,从而增长学生的见识,提高教与学的有效性.1泥石流自动预警器电磁继电器(图1)是电磁铁的具体应用,是学习电磁铁后的继续和延伸.电磁继电器是电铃、电话、自动控制系统等的重要部件,其实质是由电磁铁控制的开关,在电路
As one of the basic education disciplines, how to change the physics teaching from exam-oriented education to quality education? To strengthen students’ ability of observation and observation is an indispensable aspect of improving the quality of students in an all-round way.I think the teaching of junior physics electromagnetic relays Innovation and expansion, is conducive to our quality education, thereby increasing students’ knowledge, improve the effectiveness of teaching and learning.1 debris flow automatic alarm electromagnetic relay (Figure 1) is the specific application of electromagnet is to learn electromagnet continue And extension. Electromagnetic relay is an important part of bell, telephone, automatic control system, the essence of which is controlled by the solenoid switch, the circuit