The Role Of Reference System Selection And The Establishment Of Coordinate System In Middle School Physics Exercises

Physics is a head-achy and difficult subject for most middle school students.Many middle school students have poor physical performance.According to statistics,the proportion of the total number of students in the comprehensive physical scores of 20 to 39 points is relatively large.Middle school physics brings certain obstacles to the study of middle school students.The reason is that middle school students do not get the ideal results in completing the physical exercises,which cause students can’t get a sense of accomplishment and lose the confidence to continue to learn physics.And under the pressure of academic,students have physics anxiety.Physics is a relatively abstract and complex natural science.The physics exercises are a kind of performance tool for cultivating students’ ability to learn and use physics and to detect students’ knowledge.In the physics exercises,students encounter difficulties which include to analyse the situation correctly.There are many factors affecting the physical solution to the problem.This paper will discuss the selection of the reference system and the role of the coordinate system in the physical situation analysis.Firstly,it summarizes the difficulties in completing physical exercises,defines the difficulties in the existence of physical exercises,and summarizes the connection between the difficulties encountered by middle school students in completing physical exercises and the learning physics of middle school students,and through the case analysis,the selection of the reference system and the importance of the establishment of the coordinate system in the completion of the physical exercises,on the basis of the case analysis,how to solve the physics by selecting the reference system and establishing the coordinate system in the process of completing the physical exercises Suggestions for the problem.The coordinate system is to express and calculate the physics related knowledge in a mathematical language and has a clear effect on the direction analysis of the vector.The meaning of the reference system coordinate system is to visualize the abstract physical problems and bring convenience to the physical analysis,in order to help the middle school students to complete the physical exercises.