Research On Accurate Diagnosis Strategy In Adaptive Learning System Based On Preconception Theory

In the digital learning environment,accurate diagnosis of learner's learning situation is the basic premise of realizing learners' personalized learning,the necessary techniques to build personal learning space,and the important measures for the construction of the Three-way platform.In the new period of Education Informationlization,how to improve the accuracies of adaptive learning system for learners has become the breakthrough of promoting the accurate service of education resources and accurate intervention of teaching.Informed by the real context of the construction of smart classroom environment and the development of adaptive learning system,this study focuses on the real need of learner s ' personalized learning and literacy development,and tries to solve the real problem of cleaning up learner's preconception,based on rich theoretical research and practice experience.the study employs both qualitative and quantitative analysis,blending various research methods such as literature research method,content analysis method,questionnaire method and deductive method.Based on the preconception theory,the study strives to explore effective strategies and methods to improve the accuracy of learner ' s diagnosis in adaptive learning system.Firstly,under the guidance of the appropriate learning theory and cognitive diagnosis theory,the study introduces the core concept of preconception and constructed the learner cognition model,in order to reveal the cognitive rules of learners and the impacts of preconception on students' learning cognition.Secondly,based on the learner cognition model and the analysis of diagnostic behavior of adaptive learning system,the study constructs the accurate diagnosis strategies in adaptive learning system.Thirdly,taking the content of “force and movement” from the physics course in junior middle schools as an example,the study designs and implements the accurate diagnosis strategies in the teaching.Finally,,using questionnaire and statistical analysis method,the study validates the positive effect of accurate diagnosis strategies in adaptive learning system based on preconception theory.The whole research is divided into four parts:In the first part,it built a learners' cognitive model,which is based on the preconception theory.Through viadifferentiating the core concepts such as adaptive learning system and preconception,and analyzing related research results,this paper focuses on the real contradiction that the diagnostic accuracy of adaptive learning system can't meet the needs of actual teaching,and analyzes the diagnosis mechanism of adaptive learning system and the principle of improving diagnostic accuracy.After reviewing the related theory such as learning theories and cognitive diagnosis,the study introduced the preconception theory,and constructed a learners' cognitive model,which is based on the preconception theory and composed of some factors as scientific concepts,preconception,analysis problem ability,problem-solving capability,cognitive ability and metacognitive ability.The model could not only help to grasp the rules of the formation and development of learners' cognitive with the view of preconception,but also also could provide theoretical support for the accurate diagnosis strategy in adaptive learning system.The second part of the dissertation described the accurate diagnosis strategies in adaptive learning system based on preconception theory.After building the learners' cognitive model based on preconception theory and learner' model,via analyzing the diagnosis behavior in adaptive learning system based on preconception theory,this dissertation puts forward accurate diagnosis strategies in adaptive learning system,which contains three parts: the attribution strategy,the hindering elements of learning prediction strategy and the learners' potential characteristics analysis strategy.The strategies provide a powerful support for designing adaptive learning system and improving the learning diagnostic accuracy of adaptive learning system.In the third part,based on preconception theory,the study designs the accurate diagnosis strategies in the teaching,taking the content of “force and movement” from the physics course in junior high schools as an example.Guided by the accurate diagnosis strategies in adaptive learning system based on preconception theory,this paper designs the accurate diagnosis strategies in the teaching,which provide materials for the verification in the next part.During the process,we chose and examined the learning context,,analyzed the learner' learning characteristics,built the diagnosis strategy and investigated the learning procedure.In the last part,the study verified the diagnosis effects of the living example using the accurate diagnosis strategy based on preconception theory.To verify the diagnosis effects,the study collected data of performance results,using some empirical research methods such as questionnaire method.Then,we processed the data with data processing software,such as SPSS.We also verified the sample level of significance and the diagnostic accuracy of the strategy.Finally,we proved that in the living example,the diagnosis results are effective.Furthermore,the study compared the results of the accurate diagnosis strategies and the results of traditional diagnosis strategies in two different ways,and found that the former results are more precise.The results suggest that incorprateing the preconception theory to improve the diagnostic accuracy in adaptive learning system is a successful exploration.It has important theoretical value and practical significance for the research of improving the adaptation,intelligentization and veracity in adaptive learning system.