| The reform on new curriculum reform requires the cultivation of the very core literacy of students.Cognitive diagnosis theory that works as the core of a new generation of educational measurement,effectively combining psychology with measurement,can fully explore the knowledge structure and cognitive process behind students’ test scores so it is able to make teachers teach students according to their level and make students make up for the deficiencies.As a vital role in junior high school chemistry,the knowledge of "chemical equation" being the compulsory knowledge of examinations and the bridge of junior high school chemistry learning in junior high school is the important and difficult part of junior high school chemistry.This study is divided into two parts:(1)The development of "chemical equation" cognitive diagnostic tool for junior high school.Firstly,the cognitive model of "chemical equation" in junior high school is determined according to "Chemistry Curriculum Standard for Compulsory Education(2022 edition)",the textbook of human education edition and the suggestions of Jilin Provincial “Junior high school academic level test”,subject experts and front-line teachers in recent five years.Then,referring to the typical project assessment mode,the third grade students of middle schools in JL City and JH city are chosen to tested.At the same time,the reliability and validity,difficulty,differentiation and DINA cognitive diagnostic parameters are analyzed on the test results,and the unreasonable test items are deleted to form the final assessment tool(40 test items in total).(2)Cognitive diagnosis of "chemical equation" in junior high school.The results of different regions,genders and subjects are analyzed based on DINA model so that corresponding remedial suggestions for teachers and students can be proposed according to the analysis results.Conclusion:(1)The properties and hierarchical relationship of the junior middle school "chemical equation" constructed in this study are reasonable.(2)The cognitive diagnostic evaluation Tool of "Chemical Equation" for junior middle school compiled by this research has good reliability,validity,difficulty,differentiation and DINA cognitive diagnostic parameters.(3)Compared with traditional teaching evaluation methods,cognitive diagnosis is more conducive for teachers’ teaching based on materials and students’ learning based on deficiencies. |
