Design And Research Of High School Chemistry Teaching Based On The Tetra-Representation

The tetra-representation teaching model is an extension and development on the basis of the triple representations,which inherits the unique thinking mode of the subject of the triple representations in the instructional design of senior school chemistry.It combines chemistry with computer science,mathematics and other subjects,which will achieve a new standard of chemistry curriculum revolution in the senior school,help students to understand chemistry theoretical knowledge and experimental principle,and to realize the balanced development of cognitive structure,and improve the scientific literacy of students.The new curriculum reform believes that the implementation of high school chemistry curriculum has an irreplaceable role in improving the scientific literacy of students and promoting the all-round development of students.According to the thinking mode of senior high school students and the characteristics of chemistry,the author finds out that the teachers' teaching ideas are not consistent with the students' learning needs.The existing researches on tetra-representation prove to be not valid enough.There exist these problems in the previous researches,such as a lack of research contents,less effective cases and a shortage of validity of research effectiveness.In view of the above problems,this paper puts forward an applied study on integrating tetra-representation with concrete instructional designs.Based on the summary of the existing researches and the analysis of the basic concepts of the tetra-representation,the basic characteristics and the representational content are described systematically and comprehensively.According to the relevant theories and specific models of chemistry instructional design,the teaching content and the basic chemistry class,the author uses the representation order of macro-micro-symbolic-curve and incomplete representation order with curve representation to write the concrete instructional design and use the section about chemical reaction rate and chemical equilibrium as the subject knowledge representation.In this paper,the author uses theway of experimental comparison to carry out the practical teaching of the classroom teaching based on the tetra-representation,and carries on the correlation analysis and the descriptive statistics using the SPSS19.0.According to the statistical analysis of the test data,draw the following conclusions:(1)For students,classroom teaching based on thinking mode of tetra-representation can help students form systematic learning methods and improve their academic performance.(2)In terms of the classroom itself,because of the unique thinking structure of the tetra-representation,which make the classroom teaching lively,reflect the subjectivity of students fully,and improve the effectiveness of classroom teaching;(3)As a teacher,the professional development should be developed from the deep and multi angle when the instructional design is designed with the theory of tetra-representation.The innovation of this paper is mainly reflected in three aspects: First,this paper makes a systematic and comprehensive exposition of the tetra-representations,which lays the foundation for the implementation of the tetra-representation teaching model.Second,the combination of the information technology instead of the hand-held technology with the tetra-representations,making the teaching model is easy to spread and application in various regions of the country.Third,from the practice research on the instructional design based on the tetra-representations,it shows that the model is more lasting and effective in the actual classroom teaching.At the end of the paper,the author discusses the problems in the research and provides a new perspective for future study of chemistry education.