Research On The Development Of Teaching Model And Teaching Design Of Redox Reaction

The 2017 edition of the chemistry curriculum standard for ordinary senior high schools puts forward the core accomplishment of chemistry discipline.While continuing the scientific literacy idea,it emphasizes the discipline characteristics of chemistry itself.This requires chemistry teaching to renew ideas and explore new teaching ideas.However,in the actual teaching,teachers' understanding of the theory and connotation of model cognition is not clear enough,and the practice of model cognition is lacking.How to create models and apply them to teaching is not only one of the research directions of chemistry teaching in middle schools,but also a natural choice to explore the core accomplishment teaching of chemistry.Redox content is the core knowledge of high school chemistry.Developing teaching model and teaching design based on redox reaction,focusing on the model cognition of chemistry subject core literacy,exploring teaching and learning methods of high school chemistry redox reaction are beneficial to improving teachers' model teaching literacy and cultivating students' ability to construct model thinking and practice.Under the guidance of the core accomplishment of chemistry discipline and related theories,the existing models of redox content are classified and optimized by using research methods such as literature survey,interview,questionnaire survey and data analysis,and a redox content model is developed that conforms to the actual teaching.The teaching is implemented in combination with the teaching design and the teaching evaluation is carried out.The thesis includes the following five parts:The first part is to ask questions and explain the reasons for choosing the topic.The research status at home and abroad is reviewed.The research ideas,contents and methods are introduced.The concepts of redox reaction,teaching model development and teaching design are defined.The second part is to seek relevant theoretical basis for research, including high school chemistry curriculum standards and chemistry core literacy theory,cognitive model theory,oxidation-reduction basic theory,systematic teaching design theory,teaching evaluation theory and learning theory.In the third part,the content distribution and structure of redox reaction are analyzed theoretically.The existing redox reaction models such as documents,teaching materials and teaching parameters are sorted out,classified and evaluated.According to the literacy level of the curriculum standard " evidence reasoning and model cognition",teaching models suitable for practical application are developed:thinking model,relation model,symbol model,concept model,dynamic model,etc.The established models are pointed out to reach the required level of literacy level,and application suggestions of various models are put forward.Part ?:Based on the curriculum standards,the teaching design of redox reaction is carried out.The questionnaire design is carried out according to the cognition of the model.The teaching design and questionnaire are appropriately modified and supplemented by teaching experts and senior high school frontline professional teachers.The research object is selected for pre-test,then teaching is carried out,and then post-test is carried out.The teaching evaluation is carried out according to the evaluation results.The fifth part:conclusions and suggestions,summarizes the effect of teaching model and teaching design application,students' cognition of the model and the formation performance of model construction,points out the problems existing in the application of teaching model,the limitations of this study,and puts forward suggestions on the application of redox reaction teaching model.