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教学目的1.使学生了解磁场对电流的作用,并掌握判定磁场对电流的作用力的方向的方法——左手定则。2.培养学生的观察能力,归纳现象的思维能力以及用图画表达事物的能力和识图能力。教具铁台架,蹄形磁铁,导体(用直径为2毫米的漆包线),细金属丝,导线,干电池。(每组四人一套器材,教师演示用一套)教学过程一、复习提问(1)将粉笔放置在蹄形磁铁两极之间,粉笔受力吗
Teaching Objectives 1. To enable students to understand the effect of the magnetic field on the current and to grasp the method of determining the direction of the applied force of the magnetic field to the current - left-hand rule. 2. Cultivate the students’ ability to observe, summarize the phenomenon’s thinking ability, and the ability to use pictures to express things and ability to map. Teaching aids Iron pedestals, hoof-shaped magnets, conductors (with enameled wire 2 mm in diameter), fine wires, wires, dry batteries. (Each group of four people a set of equipment, teachers use a set of demonstration) Teaching process First, review questions (1) Place the chalk between the two poles of the hoof-shaped magnet, chalk force it?