A Research On Cognitive Diagnosis Of Chemical "REDOX" In Senior High School Students Based On GDINA Model

The new curriculum reform advocates "integration of teaching,learning and evaluation" and developmental and diagnostic teaching evaluation.The theory of cognitive diagnosis not only focuses on the evaluation of macro ability,but also pays more attention to the cognitive state of the subjects,deeply analyzes the internal cognitive structure,carries out targeted teaching,teaches students according to their aptitude,and promotes the all-round development of students.The content of "REDOX" is the key and difficult point for students to learn,and it plays an important role in middle school chemistry teaching.Therefore,it is of great significance to carry out the research of "REDOX" cognitive diagnosis in high school chemistry based on cognitive diagnosis theory.This study is divided into two parts:(1)the development of REDOX cognitive diagnostic assessment tools.Firstly,literature review,oral reporting and expert evaluation were used to determine the cognitive model of "REDOX".Secondly,test questions were compiled according to the typical project assessment mode,and sophomogeneity students of a middle level school in Changchun were selected for testing,and the reliability and validity of the test results were tested and analyzed by fitting test.Finally,an evaluation tool was formed(41 items in total).(2)Application research of assessment tools.The students of a certain 4 schools with medium teaching level in Changchun city,Jilin City and Tai 'an City of Shandong Province were selected for testing,and the results were analyzed based on GDINA model,and corresponding teaching remedial suggestions were put forward according to the analysis results.Finally,conclusions are drawn :(1)the REDOX properties and their hierarchical relationships constructed in this study are reasonable and reliable.(2)The REDOX Cognitive Diagnostic Assessment Tool for High School students developed in this study has good reliability and validity and model fitting.(3)Compared with other models,GDINA model has better model fitting.(4)Compared with traditional educational evaluation methods,cognitive diagnosis is more conducive to teachers' individualized teaching and targeted teaching.