Practical Study On Improving The Ability Of "Model Construction-Scientific Reasoning" Based On Original Physical Problems In Exercise Teaching

General High School Physics Curriculum Standards(2017 edition)sublimates the three-dimensional objective into the core accomplishment of physics,in which the scientific thinking is mainly composed of model construction,scientific reasoning,scientific argumentation and questioning innovation.model construction ability and scientific reasoning ability are the main contents of scientific thinking elements in the core accomplishment of physics.Therefore,According to the General High School Physics Curriculum Standards(2017 edition),exploration on how to effectively improve students' scientific thinking model construction ability and scientific reasoning ability can,not only provide some teaching inspiration on improving students' model construction ability and scientific reasoning ability in the future teaching,but also have positive effects on promoting the physics course goals of the new round of curriculum reform.Therefore,the study's main objective is to provide teaching suggestions on improving students' abilities of model construction and scientific reasoning of their scientific thinking.The thesis consists of five parts,as follows:The first part introduces the research background,research status analysis,research content,significance and methods.The second part firstly introduces the close relationship between the original physical problem,model construction and scientific reasoning.Then it introduces the meaning and expression of model construction and scientific reasoning and some related theories.The third part is the design of the practical scheme,the compilation of the original physical problems and their principles and practical cases.This study was carried out in an experimental class and a control class.Some exercises of the experimental class were practiced and recorded for nearly a semester against the background of the original physical problems compiled,while the control class did not take any intervention.The effect of improving students' model building ability and scientific reasoning ability based on original physical problems was tested by using the test method.The test paper was composed of five original physical problems.In the fourth part,SPSS.20 is used to analyze the difficulty,reliability and distinction of the test paper for the original physical problems,and draw the score distribution histogram of each question.The histogram of the score distribution of each question in the experimental class and the control class was analyzed by comparative method.Finally,according to the score distribution histogram obtained by the mean,for each question in the two classes were screened out of the average size of the two papers continue to use the comparative research method more detailed analysis of the students of the two classes answer process.The fifth part draws the conclusion based on the data analysis that the exercise teaching under the original physics problem is beneficial to improve the students' model construction ability and scientific reasoning ability and the use of the original physics problem can effectively evaluate the students' model construction ability and scientific reasoning ability.On this basis,some Suggestions on how to improve students' ability of "model construction-scientific reasoning" in exercises teaching based on original physics problems are put forward.