Development Of Evaluation Tools For Chemistry Learning Attitude Of High School Students

At present,most of the measurement methods of high school students’ chemistry learning attitude are tested by classical measurement theory.However,the classical measurement theory has sample dependence and item dependence,and cannot achieve isometric measurement and other shortcomings due to the mutual influence between subjects’ ability and item difficulty.The Rasch model,however,turns this into reality.Therefore,under the new curriculum reform,it is of practical significance to develop an assessment tool of high school students’ chemistry learning attitude based on Rasch model.This study is based on the theory of A-B-C three-way structure of learning attitude,namely(A)cognitive level,(B)emotional factors,(C)behavioral intention.Questionnaires are prepared from these three dimensions,and Rasch model is applied to test the fit degree,so as to achieve the isometric measurement of chemical learning attitude,so as to improve the reliability and validity of measurement tools.After compiling the questionnaire,I selected three high schools in Yushu City for preliminary test,analyzed their data with Winsteps software,interviewed the students,and deleted or optimized the items with poor fitting degree,thus forming a new assessment tool.In the second time,students from three schools were selected to test the new assessment tool,and the reliability and validity of the retest data were analyzed by Rasch model.In the second test,the fitting index of Infit MNSQ was 1.01,the fitting index of Outfit MNSQ was 1.01,the fitting index of Infit ZSTD was-0.1,and the fitting index of Outfit ZSTD was-0.1,All the 30 items are close to the ideal level,and the distribution of the 30 items is comprehensive,which can summarize students with different levels of chemistry learning attitude.The data and graphs obtained at last show that the reliability and validity of the assessment tool developed in this research are relatively good.