一、教材简析 人教版小学自然第11册《电磁铁》是第6册《磁铁的性质》的延伸,《电磁铁》又分《电磁铁(一)》和《电磁铁(二)》两课。《电磁铁(一)》着重指导学生认识电磁铁的构造和性质,《电磁铁(二)》着重指导学生认识电磁铁磁力大小可以改变及改变的因素。我设计的课题是《电磁铁(二)》。 First, the textbook analysis PEP primary eleventh “electromagnet” is the sixth volume “magnet properties” extension, “electromagnet” is divided into “electromagnet (a)” and “electromagnet (b)” Two lessons. “Electromagnet (a)” focuses on guiding students to understand the structure and properties of the electromagnet. “Electromagnet (II)” focuses on guiding students to understand the factors that can change and change the size of electromagnet. My design topic is “Electromagnet (II)”.