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为了便于选拔人才,江苏高考物理试题在最近几年的压轴题,都以运用微元法求解电磁感应及动力学的综合题的形式出现。其实教材中本身就包含着丰富的微元法素材,如果教师能将这些素材挖掘出来,在平常的教学中不断地对学生进行方法指导,攻克高考压轴题也并非难事。一、对时间的微元法——“时间元”高中物理教材第一次涉及微分思想始于瞬时速度的概念。必修1教材第16页从平均速度出发引入瞬时速度的概
In order to facilitate the selection of talents, the final topics of the physics examinations in Jiangsu Province in recent years have all appeared in the form of a comprehensive question using the microelement method for electromagnetic induction and dynamics. In fact, the teaching material itself contains rich micro-element material, if the teacher can dig out these materials, in the ordinary teaching of continuous method guidance for students, to overcome the college entrance examination finale is not difficult. First, the microelement method of time - “Time element ” The high school physics teaching material involves for the first time the concept of differentialism begins with the concept of instantaneous speed. Compulsory 1 Textbook Page 16 Introduction of Instantaneous Speed from Average Speed