教学设计磁场是电磁学里的一个基本概念,深刻认识它有利于理解“电与磁”的相互作用规律,因为磁场看不见、摸不着,所以磁场的存在、磁场的方向,对于初学者来说都是全新的、比较抽象的知识,加之八年级的学生想象力及抽象思维能力有限,而磁场又是贯穿全章的主线,因此本节教学内容是本章的教学重点和难点。 Magnetic field design is a basic concept in electromagnetism. It is of great help to understand the law of interaction between “electric and magnetic” because the magnetic field can not be seen or touched. Therefore, the existence of magnetic field and the direction of magnetic field are of great importance to beginners Is all new, more abstract knowledge, combined with the eighth grade students’ imagination and abstract thinking ability is limited, and the magnetic field is the main line throughout the chapter, so this section teaching content is the focus of this chapter teaching and difficulties.