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教学内容:小学自然常识第四册:十三、电磁铁教学要求: 1、要让学生掌握“利用电流产生磁性”的知识,能自己动手安装电磁铁实验装置。 2、使学生了解电磁铁在生产、邮电、交通运输和日常生活中的广泛应用,了解它们的工作原理。教具准备: (将学生每4—6人分为一组,每组必须有一套下列实验物品Ⅰ、Ⅱ) Ⅰ、大铁钉一枚,电池两节,漆包线若干,小铁钉(“米钉”)若干。Ⅲ、教师实验用具:自制“工作电路故障指示灯”示意实验装置
Teaching content: Primary Natural General Knowledge Book IV: Thirteen, electromagnet teaching requirements: 1, to allow students to master the “use of magnetic current generated by the” knowledge, can do it yourself experimental installation of electromagnets. 2, to enable students to understand the electromagnet in the production, telecommunications, transportation and daily life in a wide range of applications to understand how they work. Teaching aids to prepare: (the students every 4-6 people divided into groups, each group must have a set of the following experimental items Ⅰ, Ⅱ) Ⅰ, a large iron nails, two batteries, enameled wire, nails “) A few. Ⅲ, teachers experimental apparatus: homemade ”working circuit fault indicator light" indicates the experimental device