Cause Analysis And Breakthrough Of Difficulties In Experimental Teaching Of Measuring Electromotive Force And Internal Resistance Of Batteries In Senior High School

With the continuous development of science,technology and educational ideas in China,the new curriculum standards put forward higher requirements for physics experiment teaching under the educational background of core literacy.Physical and electrical experiment has become a recognized difficulty for high school students and teachers because of its abstract knowledge,complicated experimental operation and compulsory entrance examination.In the compulsory experiment of electricity in senior two,the measurement experiment of battery electromotive force and internal resistance plays an important role,which is generally considered difficult for students in practical teaching.Therefore,the author studies the learning difficulties and causes of experimental students in this section,and finds out the corresponding teaching countermeasures,hoping to provide some reference value for practical teaching.On the basis of learning theory,this study takes a senior high school student in Nanyang as the research object.Through questionnaires and interviews,it investigates the learning difficulties of the measurement experiment of battery electromotive force and internal resistance of senior two students,analyzes the reasons for the difficulties according to students’ feedback and teaching experience,and puts forward corresponding teaching strategies according to the causes of the difficulties.The reasons for the learning difficulties in the measurement experiment of battery electromotive force and internal resistance are as follows:1.The reasons for the difficulties in the experiment of measuring the electromotive force and internal resistance of batteries are:wrong pre-concept and insufficient knowledge structure;Lack of physical situation and insufficient experimental construction;Single teaching method and improper use of media;Weak mathematical foundation,not good at combining numbers with shapes.2.According to the causes of difficulties,combined with previous experience and teachers’ suggestions,the teaching countermeasures to break through the difficulties in the measurement experiment of battery electromotive force and internal resistance are as follows:skillfully using structure and establishing knowledge system;Change the teaching mode and create physical situations;Integrating information technology and optimizing physics classroom;Make good use of self-made teaching AIDS to increase students’ participation;Strengthen the integration of disciplines and infiltrate mathematical ideas.