Measurement And Diagnosis Of Physical Cognitive Structure Of High School Students

The physics curriculum standard of high school shows new requirements on evaluation:high school physics course should reflect the function on intrinsic motivation and diagnosis.It should focus on process evaluation and individual differences of students,help students understand themselves and establish confidence,promote the development of students at the original level.There are some disadvantages of Chinese physical teaching evaluation on students' cognitive structure.It makes up for the inadequacy of this aspect through the rise of cognitive diagnosis.It can help people further understand the individual internal microscopic mental process and cognitive structure.It can implement diagnosis of evaluation for individual cognitive development status and provide more diagnostic information in the teaching and learning process.This study adopts the technology of concept map that can more directly present students' cognitive structure.It uses particle's motion as the breakthrough point to explore the application of concept map to measure and diagnosis the effectiveness and operational of students' cognitive structure.The meaning of the study is to provide paradigm for high school physics teachers to measure and diagnosis students cognitive structure in high school.It also provides experimental basis for compilation diagnostic tools of the concept map preparation.Hence,it further enriches the research field of physics teaching evaluation.The research mainly adopts methods of literature,questionnaire and experiment.First of all,it hackles the study of cognitive structure and concept map technology through reading related literature,the domestic and foreign research status.It provides theoretical support for this study.Then,it surveys physics learning situation of high school through questionnaire method to provide a reference for further research.Finally,it implements empirical research and analyzes experimental results.The empirical study includes two experiments:the first one requires students structure concept graph of particle motion;the second experiment students are required to complete the task to fill blank places of motion map.The results of experiment show:(1)the reliability is 0.912,validity is 0.858,both of them is good(2)there is no obvious differences on cognitive structure of men and women about the concept map construct;(3)the excellent students constructs more rich and perfect,accurate concept map which contains total number of nodes,lines,proposition than secondary and underachieving students,and the difference is remarkable(P<0.07);(4)all the subjects qualitative analysis shows students'representation of cognitive structure is single and shortage of knowledge storage capacity;false proposition is more and the degree of ordering knowledge is low;transverse connection is less,the openness of knowledge is week(5)the reliability of blank spaces on concept map is a=0.742,the difficulty is P=0.49,degree of differentiation is D=0.67,and the correlation coefficient is 0.256 with traditional multiple choices,the correlation coefficient is 0.454 with the traditional blank spaces,the correlation coefficient is 0.598 with the traditional calculation,predictive regression analysis shows that blank spaces of concept map has the extremely remarkable ability to predict for traditional blank spaces tests and calculation(P<0.01)(6)diagnosis results of cognitive structure on particle movement is:the students misunderstanding exists about acceleration of uniformchange speed linear motion,they misunderstand the essence of the change of particle motion,misunderstanding of uniform circular motion velocity and acceleration.The paper concludes through the analysis of experimental results and discussion,as the following:(1)the concept map can be effectively measure and diagnosis of physics cognitive structure of high school students;(2)the relation evaluation method can be widely applied to grade in physical structure concept map;(3)students of different academic levels have significant physics cognitive structure;(4)the blank spaces of concept map can be used for large-scale physical knowledge test;(5)the diagnosis results of particle motion on cognitive structure can provide the reference for teachers.Finally,based on the diagnosis results,the author puts forward the teaching strategies to optimize students' physical cognitive structure:firstly,the teachers remedy through understanding students' original cognitive structure;secondly it pays attention to the systematic of knowledge and outstanding physical thinking method;thirdly,the teachers should guide students to evaluate themselves,to promote actively building structure of knowledge.