The Cognitive Diagnosis Of Junior High School Students Based On G-DINA Model

Unlike traditional measurement theory,cognitive diagnosis as the focal point of next-generation measurement theory not only provides grand estimate,but also evaluates the internal knowledge structure of individuals,provides a basis for teachers to conduct targeted guidance,and satisfies the needs of the basic education reform for education evaluation.New demand for personalized analysis guidance.The G-DINA model is developed from the DINA model,which has a good diagnostic effect.However,there are few empirical studies on this model.Circle as a key point in the junior school study,teachers need to grasp the learning situation of students in time.Therefore,this research uses the circle as the diagnostic content,and uses the G-DINA model to make cognitive diagnosis for ninth grade students.The study is divided into two aspects.Compiling the circle cognitive diagnostic examination paper is the first aspect.First,refer to mathematics textbooks,curriculum standards,academic level test standards and mid-term exam questions in the past 10 years to complete the definition of the cognitive attributes and attribute hierarchical relationships of the circle,then use the voice The legality of thinking verifies the rationality of the hierarchical relationship and interview experienced first-line mathematics teachers;secondly,guided by the Q matrix theory,select some quizzes from the Exam Questions in Mathematics of Yunnan Province in the nearly 10 years to complete the preparation of the circular cognitive diagnosis test,then conduct a small-scale test to check the credibility and validity of the paper,using the HCI and multiple regression analysis to examine the attribute hierarchy quantitatively,and all indicators up to grade.The second aspect is the analysis of circular cognitive diagnosis.Chose the ninth grade first volume students that from three middle schools in Yunnan Province as the objects of study.After the test,the G-DINA model is used to identify the students' mastery of the circle cognitive attributes,then examine the imitative effect of this model and classify the student groups according to the result,calculating cognitive attribute mastering probability,and the difference analysis of school and gender is carried out on the probability of grasping the attribute.On the basis of the analysis result of cognitive diagnosis,giving some feasible suggestions on the education of circle.Research shows that:(1)Cognitive diagnostic tests can assist teachers acquire the knowledge structure of students.Compared with traditional tests,it is more helpful for teachers to adopt specific teaching remedies.(2)Students' mastery probability of attributes A3(circumference angle theorem and its inferences)and A6(circle tangent properties and related theorems)are only 60.55% and 59.17%,which are slightly inferior to the other four attributes,the result also suggests teachers should pay certain attention to these two attributes when carrying out remedial teaching.(3)D school students have a poor grasp of attribute A5,and L school students have a poor grasp of attributes A3,A5 and A6(circle calculation),the W proofreading level of A3 and A5 is poor,each school should take remedial measures according to the specific situation of the school.(4)The overall attribute mastery of girls is better than that of boys.Mathematics A5 is 60.63%.Boys have a poorer grasp of attribute A3,which is 56.28%.Teachers should focus on male and female students in remedial teaching.