Teaching Resources Development Of Electroplating Experiment Based On Evidential Reasoning And Model Cognition

In the recent years,competency education has been actively explored all over the world.In 2007,Chemistry Curriculum Standard of Senior High School(2017)officially published by Ministry of Education formally combines competency education with disciplinary education and cultivates core competency of student in chemistry while emphasizing disciplinary education.Simple electroplating experiment is included in the selective compulsory course experiment by curriculum standard.Therefore,it is a confronting challenge for chemistry teachers how to integrate the cultivation methods of the disciplinary competency into the classroom teaching of chemical experiment and what reasonable teaching resources to use.In this study,literature research,questionnaire investigation and interviews are used to investigate the current situation of electroplating experiment teaching.The author determines the teaching objectives in combination with the curriculum standards,designs and implements experimental development of simple electroplating experiment,fully compares and collects various experimental variables in electroplating experiment,and develops a interactive electroplating experimental simulation software based on above researches and information technology.The author carries out teaching design and empirical research in combination with constructivism theory,meaningful learning theory and humanistic theory.The empirical results indicats that education in combination with the developed teaching resources can effectively improve the competency level of students' evidential reasoning and model cognition,and the author puts forward substantive teaching suggestions according to the research process and results.The study results are teaching experimental method of simple electroplatingexperiment based on the disciplinary core competency,electroplating experimental simulation software which can be applied as classroom teaching tools for high school chemistry education,and the teaching design of using the teaching software which can be applied as reference cases for electroplating experiment teaching.The study mainly consists of six characters:The first character is the research background and analysis of current situation.The author researches on the current situation of electroplating experiment study,evidential reasoning and model cognition study,and middle school chemistry teaching resources study.Then the author analyzes the shortcomings and focus of the current research so as to determine the research subject.The second character is the concept definition and theoretical overview.The thesis defines "competency","evidential reasoning","model cognition" and "teaching resources",and summarizes the theory of constructivism,meaningful learning theory and humanistic theory.The third character is the investigation of current education situation.The author using questionnaire and interviews to investigate the students' learning situation,the cultivation of classroom core competency and the learning difficulties of electrolytic cell.The fourth character is the development of teaching resources.The thesis analyzes the curriculum standard of "electrolytic cell",introduces the design environment,design ideas and software interface of electroplating experimental simulation software,and carries out teaching design according to the teaching material analysis,learning situation analysis and education theory.The fifth character is the empirical research.According to the pretest,the author determines the experimental class and the control class.Then through the post-test,student interviews,classroom observation,the author evaluates the case effect and applies statistical analysis method to get the empirical research results.The results indicate that the case education has a certain improvement on the level of students' evidence reasoning and model cognition.The sixth character is the conclusion and prospect.The research conclusions are drawn according to the empirical research results and in combination with the research process and research conclusions,substantive suggestions are put forward for the implementation of the cultivation of core competency.