苏科版九年级物理教材对电流和电压都没有严格的定义,譬如电流是以水流为例来说的,电压是以水压来比喻的,这样含糊不清地和学生讲,学生能理解吗·这会不会误导学生呢·为了揭开心中的疑问我翻阅了一些相关资料,了解了一些这方面的知识。电流和电压的概念都很抽象,学生也难以理解,即使教材给出了严格的定义学生也掌握不 Su Ke version of the ninth grade physics textbook on the current and voltage are not strictly defined, for example, the current is based on the flow of water for example, the voltage is analogy with the water pressure, so vaguely and students say, students can understand it This will not mislead the students? In order to uncover the hearts of doubt I read some relevant information, some knowledge of this area. The concept of current and voltage are abstract, students are difficult to understand, even if the text is given a strict definition of the students also mastered