教学设计教学目标知识与技能1.能描述电磁铁,说明电磁铁的特点和工作原理。2.理解电磁铁磁性强弱与哪些因素有关。3.能说明电磁继电器的结构及工作原理,了解电磁铁在生产、生活中的应用。过程与方法过程与方法1.通过实验,得出电磁铁磁性强弱与那些因素有关。2.通过实物、动画、图片等演示展示生产、生活中的电磁铁的应用,引导学生自主分析,培养学生运用所学物理知识解释有 Teaching Design Teaching Objectives Knowledge and Skills 1. Can describe the electromagnet, explain the characteristics and working principle of the electromagnet. 2. Understand the magnetic strength of electromagnets and what factors. 3. Can explain the structure and working principle of electromagnetic relays to understand the electromagnet in the production and life of the application. Process and method Process and method 1. Through experiments, we can draw the conclusion that the magnetic strength of electromagnet is related to those factors. 2. through physical, animation, pictures and other demonstrations demonstrate the production and life of the electromagnet application, guide students to analyze, develop students to use the knowledge of physics explained