Research On The Compilation Of Chemistry Test Questions In Senior High School Based On Rasch Model ——Take The Foundation Of Organic Chemistry As An Example

The new curriculum of chemistry in senior high school has put forward new requirements for students' academic evaluation,which has changed from paying attention to basic knowledge of subject to examining ability and accomplishment.The evaluation of academic quality is the key point in the teaching reform.The new curriculum standard puts forward suggestions on students' academic level examination propositions from five aspects: examination purpose,propositional frame,propositional principle,propositional procedure and typical test description.The compilation of test questions is an important part of teachers' teaching work.Most middle school teachers lack of independent proposition experience,and mainly combine existing test questions in practice,which affects the quality of assessment to a certain extent.Therefore,this study carries out practical exploration by compiling examination questions with chemistry discipline ability as the evaluation target,in order to provide reference for front-line teachers.On the basis of summarizing the existing studies,this study defined the chemistry discipline ability as the personality and psychological characteristics that students must possess to successfully complete the related chemical activities.The sub-dimensions of chemical discipline ability are divided into chemical terminology characterization ability,chemical experiment exploration ability,chemical quantitative calculation ability and chemical model construction ability,and each sub-dimension contains three levels,namely identification,internalization and application level,forming the chemical discipline ability system.Based on organic chemistry module as an example,to build three-dimensional test framework,by analyzing the distribution of organic test questions nearly five years college entrance examination examination site determine the scope of the paper compiled,two-way breakdown to develop knowledge of chemical subject ability,combining organic chemistry basic materials column material,choose the suitable situation according to the level of chemical subject ability to design problem,After the preliminary test questions were generated,the test questions were tested and analyzed with Rasch model.The abnormal test questions were modified and improved by interviewing teachers and students,and the final test questions were determined.Through the test,the software Winsteps 3.66.0 in the Rasch model was used for data processing,and the overall quality chart,standard residual chart,white chart and the quality test table of each question were obtained.The test questions were tested from the quality,difficulty,reliability,fit degree,one dimension and other indicators.According to the difficulty of the test questions and the students' ability value,the students' ability performance of chemistry subject was analyzed.The Rasch model is used to analyze the test questions and the students' abilities in chemistry.The following conclusions are drawn:The three-dimensional test question compilation framework and test question compilation program constructed in this study are scientific and feasible;The Rasch model has a good analysis effect on the test questions.The test questions of chemistry situation prepared by this paper are suitable for students' learning situation,and can measure students' chemistry ability well.Due to the limited research time and personal experience,this study still has some sho rtcomings,such as a small sample size,incomplete coverage of disciplinary ability,and pos sible deviation of test difficulty.Therefore,it needs to be further tested and improved in su bsequent research.