| Objective:(1)To prepare an elementary school score to calculate the cognitive diagnostic test,and to provide effective tools for the screening of difficult students.(2)Provide data support for the construction and application of cognitive models by.analyzing the students' response patterns and error rules.Methods:Based on the related literature review,in order to semantic representation,three code theory as the foundation of cognitive theory,combining cognitive diagnostic test compile technical route,to score,method to calculate the wrong type for the selected topic basis,establishment,method to calculate the cognitive diagnostic test scores.In this study,the fractional multiplication and division method was used to calculate the six cognitive attributes,and to construct the relationship of attribute hierarchy,and to verify its attribute and attribute hierarchy through the expert evaluation method and the oral report method.This test is divided into two sets of A and B,each of which has 30 titles,which is based on calculation.The demarcation of the test is determined by the combination of expert evaluation and ROC curve method.Successively after two measurement,prediction for screening the title for the first time,formed two sets of test,the second time for the formal testing,test out 1150 copies of valid test 1041,recycling effective rate was 90.5%..Finally,based on the DINA model,the students' response patterns and error rules are analyzed.Results:(1)The project parameters showed that the difficulty value of A volume was between[-3.234,0.309],and the average difficulty was-1.867,and the discrimination value was between[0.424,1.629],and the average difference was 1.214.The difficulty value of volume B was between[-2.862,3.664],the average difficulty was-1 083,and the difference was between[0.497,1.658],and the average difference was 1.088.(2)The maximum information function of volume A is 21,and the maximum information function of volume B is 19.(3)All students were successfully classified through the cognitive diagnostic analysis platform,and over 90%of the students were classified into 14 typical project assessment models.Most of the 67 students with difficulty in math study were classified into 7 typical project assessment models,including 17 in A and 21 in B.(4)Cognitive diagnosis,according to the results of students in basic knowledge,basic algorithms,score transformation,reduction of a fraction on the four properties better master,but in into the minimalist score,score on operation procedure,method of master is poorer.Conclusion:(1)It is reasonable to define the attribute and hierarchical relationship of fractional multiplication and division.(2)The test project of cognitive diagnosis is of good quality,and the test information function has reached the requirements of measurement,and the test has a good diagnostic validity.(3)Cognitive diagnosis realizes the analysis of the students' response patterns.but in into the minimalist score,score on operation procedure,method of master is poorer.. |
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