Teaching Design And Practice Of High School Chemistry Unit Based On Core Literacy

According to the logical structure of subject knowledge and the learning order of students,unit teaching pays attention to the relationship between knowledge and carries out reasonable organization and integration from the perspective of overall planning.The unit teaching containing situation can meet the spiral development characteristics of knowledge and ability and the systematic process of continuous and advanced cultivation of core literacy in chemistry.The main contents of this study include:(1)Literature research method is used to sort out the research status of chemical core literacy and unit teaching,and it is found that the research on chemical core literacy is more and more detailed;The research field of unit teaching is becoming wider and wider,but the focus on chemistry is relatively less;The unit teaching research under the core literacy of chemistry mainly focuses on the material properties and transformation,and the research on organic compounds needs to be strengthened.At the same time,it defines the related concepts and expounds the theoretical basis.(2)In view of the current situation of chemistry unit teaching and learning in senior high schools,a questionnaire survey was conducted around the two dimensions of theoretical understanding and practical implementation in current teachers’ unit teaching,and the two dimensions of intrinsic motivation and external performance in students’ learning.It is found that high school teachers are facing the double pressure of increasing the content of compulsory textbooks and insufficient class hours,the phenomenon of isolation and fragmentation of knowledge points and weak awareness of structured curriculum in teaching are not conducive to the advanced cultivation of students’ core literacy in chemistry,and students’ limited ability of knowledge structuring and transfer.(3)On the basis of the results of theoretical research and questionnaire survey,combined with the principles of unit teaching design and ADDIE model,this paper combs the unit teaching design ideas based on the cultivation of core literacy of chemistry discipline,and takes the production of braised fish as the unit situation.The transformation of organic functional groups,which contains chemical thinking,models and core literacy of the subject,is designed and practiced as the carrier of teaching units.(4)Guided by the tasks and objectives of unit evaluation,continuous teaching practice evaluation is carried out with the help of various evaluation methods such as paper-pencil test,learning evaluation form and teacher interview.After the unit teaching of organic functional group transformation based on the core literacy of chemistry,the students’ post-test scores have significant differences,and the scores of the experimental class are obviously better than those of the control class;Students’ learning level is consistent with the situation reflected by the small test case;It is supported by interviews with teachers after class.After experiencing the unit learning of forming thinking,building model,strengthening thinking,perfecting model and transferring thinking,applying model,students can deepen the chemical concept of structural properties and uses,promote the formation and application of general ideas to understand organic compounds,construct a structured knowledge system,and apply the model of functional group transformation.To realize the independent thinking ability and learning thinking transfer ability of the origin of the problem,and to promote the advanced and systematic cultivation of the core literacy of chemistry.