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【教材分析】在本节内容之前学生已经学习了电场力做功、电势能、电势的概念以及电场力做功与电势能变化之间的关系,在短时间内连续学习新知识和新理论对于学生知识需要一次归类和整理,而电势差的教学能够很好地起着这样承上启下的作用,所以本节课设计成一节带有复习色彩的新课教学,在知识的接受上给学生一次缓冲的空间,在能力的提升上给学生一次归纳整理的引领,同时对于后面学习电势差与场强关系的学习也起着衔接作用。
【Textbook analysis】 Before this section, students have learned the concept of electric field work force, the concept of potential energy, potential and the relationship between electric field work and potential energy changes, continuous learning new knowledge and new theory in a short time for students knowledge Need to be classified and finishing once, and the teaching of potential difference can play a good role in this connection, so this lesson is designed with a review of the color of the new lesson teaching, to give students a buffer in the acceptance of the space , To enhance the ability to give students a summary of the lead, at the same time for later learning potential difference and field strength learning also plays a role in convergence.