Research On The Evaluation Of The Formation Of The Concept Of Magnetic Field Force For Senior High School Students In The History Of Electromagnetics

The formation level of physical concepts will have an impact on the solution of students’ physical problems,and in the General High School Physics Curriculum Standards(2017 edition),it is also mentioned that physics teaching takes subject concepts as the core.In This study,the history of the concept of magnetic field force is used as the physical context of the test questionnaire,and any model high school in Nanning,Laibin,Hengzhou and Sanjiang counties(represented by A,B,C and D schools respectively)is tested.Test the formation level of students’ concept of magnetic field force and analyze the factors affecting the formation level of students’ concept of magnetic field force.The specific research contents of this paper are as follows:1.Construct a physical concept formation level framework with three levels(knowing,understanding,and being able to do)and nine levels,and assign scores to the physical concept formation level framework to develop a magnetic field force concept formation level scale.2.According to the development history of electromagnetics,combing the materials of the development history of the concept of magnetic field force,taking the history of the development of magnetic field force as the physical situation,designing the test questionnaire of the concept formation level of magnetic filed force,and analyzing the correlation and consistency of the test questionnaire,so that it can be used to measure the students’ concept formation level of magnetic filed force.3.To analyze the formation level of the concept of magnetic field force of the science students in Senior Two.(1)Analysis of the formation level of students’ concept of magnetic field force(1)Through the analysis of different schools,it was found that the mean values of schools A,B and C were not very different,all of which were 21.43 points(accounting for 47.6% of the total score)and above,while the mean value of school D was the smallest,only 15.09 points(accounting for 33.5% of the total score).(2)By analyzing the different classes in School A,it was found that Class 8 had the highest mean score of 24.54(accounting for 54.5% of the total score),while Class 2 had the lowest mean score of 18.81(accounting for 41.8% of the total score).(2)Analysis of the differences in the formation of students’ concept of magnetic field force(1)By analyzing the differences of different schools,it is found that at the level of knowing and understanding,school A and school B are above the average level,and school A has the best results.At the level of being able to do,the three schools A,B and C are all above the average level,and the school C has the best results.(2)By analyzing the differences between different classes in School A,it is found that at the level of knowing and understanding,students with good physical foundation do not necessarily have a good grasp of the concept of magnetic field force.At the ability level,students with good physical foundation can better grasp the concept of magnetic field force to a certain extent.4.The achievement of the formation level of the concept of magnetic field force by the science students in Senior Two.From the overall analysis,the proportion of students in the three levels of knowing,understanding and doing is 96.1%,72.6% and 13.5%,respectively,indicating that most students can reach the level of understanding,but not ideal in the level of doing.By analyzing the proportion of different schools in the three levels of knowing,understanding and being able to do,it is found that the schools with the highest and lowest proportion in the levels of knowing and understanding are a and D respectively.At the level of being able to do,the schools with the highest and lowest proportions are C and D schools respectively.5.The influencing factors of the formation level of students’ concept of magnetic field forceThrough the statistics and analysis of students’ wrong answers,it is found that the factors affecting the formation of students’ concept of magnetic field force are concept ambiguity,separation of old and new knowledge,model construction ability,mathematical application ability,information integration ability and reasoning ability.According to the statistics of the proportion of the number of people disturbed by the influencing factors,it is found that the proportion of the number of people disturbed by the influencing factors reaches 40% or more.In addition,in this test,gender also has a certain impact on the formation of students’ concept of magnetic field force.