Analysis Of High School Chemistry Textbooks And Teaching Suggestions From The Perspective Of Triple Representatio

The characteristics of chemistry determine that learning chemistry is a process of multi-angle perception of substance and its changes from macroscopic phenomena,microscopic nature and symbolic expression.According to Senior High School Curriculum Standard in Chemistry(2017 edition),students should develop "macro-identification and micro-analysis" from "core qualities of chemistry discipline ",based on which proposes the corresponding curriculum targets.It follows that the cultivation of triplet relationship is helpful for students to improve chemical learning ability and develop core qualities of chemistry.As an important teaching tool,it is of much concern to study the triplet relationship in textbooks.this study analysis the triplet relationship in text,combined with the analysis of normal class teaching cases,propose suggestions of using senior chemistry textbooks and teaching strategies.First of all,this study review and sort out the research status of the triplet relationship and senior chemistry textbooks,formulate coding rules,statistically analyze the triplet relationship and presentation of text under the topic "principles of chemical reactions" in People's Education edition?Luke edition and IGCSE Chemistry.Secondly,observe how teachers consciously understand and fully express the triplet relationship of textbooks through the teaching-analysis.Finally,propose following suggestions of using the triplet relationship materials in teaching activities: do well to the secondary development of textbooks,use materials creatively;use textbooks flexible,make the triplet relationship explicit and systematic;absorb the advantages of different textbooks and obtain various resources;diversified textbooks' strategies using method,realize the change from "teaching textbooks" to "teaching with textbooks".Not only does this study help teachers grasp textbooks better,form the triplet relationship and deeply understand the significance of the triplet relationship,but also this study promotes the development of teaching of the triplet relationship,construct the model of the triplet relationship in students' minds,and promotes the development of students ' core qualities such as "macro-identification and micro-analysis".