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《电磁铁》这部分教材的教学重点是指导学生掌握电磁铁的性质,教学的难点是使学生认识电磁铁磁力大小与串联电池的数量、线圈匝数的关系。根据这部分教材的知识结构特点和能力培养的要点,我是这样安排教学的: 一、制作引入,激发兴趣 首先,我给每组准备了充足的实验材料:用火烧过的大铁钉两根,40
“Electromagnetism” This part of the teaching material focuses on guiding students to master the nature of the electromagnet, teaching difficulties is to enable students to recognize the size of the electromagnet magnetism and the number of batteries in series, the relationship between the number of turns. According to this part of the textbook knowledge structure and ability to cultivate the main points, I am arranging teaching: First, the introduction of production, to stimulate interest First of all, I have to prepare a sufficient number of experimental materials: the fire with two large nails , 40