Research On Teaching Strategies Of Electric Field Problem Solving In High School

In the teaching process,that students have great difficulty in getting knowledge about the electric field has been found.In order to improve students' ability to solve the related problems,this paper aims to explore the teaching strategies of solving the electric field problems by studying the methods of solving problems and the problems of electric field.Based on the research of the related literatures at home and abroad,the concepts of the problems,solving problems and the teaching strategies have been defined.Under the guidance of theories of constructivism and the zone of proximal development,this paper mainly adopts the literature analysis and case study to research the problems in the electric field and the teaching strategies for solving the field's problems.According to the curriculum standard and textbook,the electric field problems can be divided into how to teach field's concept,field's distribution and field's knowledge application.So,experiment and animation demonstration strategy,mapping strategy,ideas and methods' gudiance strategy as well as problem resolving strategy are put forward based on the electric field problems.In the teaching electric field concept and knowledge application,the experiment and animation demonstration strategy can help students intuitively and vividly understand electric field problem by using animation showing;in the teaching field distribution,it can help students to understand the cause of the electrostalic phenomenon,but in the process of using it,the purposes and the time should be pay more attention to.Mapping straregy is embodied in the three kinds of electric field problems,presenting the abstract and complex field problems in an intuitive and vivid way to help students understand the electric field problems and form the problem-solving ideas and methods.At the same time,the students' autonomy as well as the teachers' guidance should be of equal importance.The ideas and methods guidance strategy mainly reflects on the thinkings of charge force,exercise,work of electrostatic force,change of electrical potential energy and potential changes before solving the problems,and the approaches of induction,analogy and comparison.In the process,however,teachers' guidance embodies not only in the overall train of thoughts but also in some necessary details.The problem decompostion strategy can divide the electric field problems that students can't directly solve into several small pieces,which is in line with the level of students' development.But the problem decomposition must be based on the level and the ability of students instead of resolving them blindly.