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课程标准要求:1.通过实验认识磁场,知道地磁场。2.通过实验,了解电流周围存在磁场,探究并了解通电螺线管外部磁场的方向。3.通过实验,了解通电导线在磁场中会受到力的作用,知道力的方向与哪些因素有关。4.通过实验,探究并了解导体在磁场中运动时产生感应电流的条件,了解电磁感应在生产、生活中的应用。从新课程标准要求,可以看出对磁场和电流的磁场都属于认识了解层次,而对通电螺线管外部磁场和电磁感应现象都是要求
Course standard requirements: 1. Know the magnetic field through experiments, know the geomagnetic field. 2. Through experiments, understand the magnetic field around the current to explore and understand the direction of the magnetic field solenoid solenoid. 3. Through experiments, understand the conductive wire in the magnetic field will be the role of force to know the direction of force and what factors. 4. Through experiments, explore and understand the conductor in the magnetic field induced current conditions, to understand the electromagnetic induction in the production, life. From the requirements of the new curriculum standards, we can see that both the magnetic field and the current magnetic field belong to the level of understanding, but the external magnetic field and electromagnetic induction solenoid solenoid phenomenon are required