| This study will conduct a comparative study of the “Chemical Reaction and Energy” project of the Sino-U.S.High School Chemistry Textbook,and select the“People’s Education Press” textbook “Chemistry 2”((Required 2))“Chemical Power in Development” to conduct innovative design and development and practical research of teaching cases.Ensure the implementation of case teaching recommendations.The paper is divided into the following sections:The first part,introduction.Including the background of the topic;the relevant research of this topic;the research theme and research methods.The second part is the theoretical basis.Explain the connotation of constructivism theory,recent development zone theory,cooperative learning theory and inquiry learning theory,and the guiding role of different theories in the teaching design of this study.The third part is the comparative study of the topics of "Chemical Reaction and Energy" in the textbooks of Sino-American chemistry.A comparative analysis of the selection of relevant content of “chemical reaction and energy”,the structure of the system,and the presentation of the three perspectives leads to the following conclusions:(1)With regard to content selection,through the presentation of the social background of the thematic knowledge and the design of targeted inquiry experiments to promote basic students The formation of ideas.However,the lack of emphasis on "discipline intersection" knowledge,the lack of livelihood and interest in the design of inquiry experiments,is not conducive to the development of students’ interest in learning,and less to demonstrate the application of modern technology,is not conducive to reflect the textbook’s advance with the times;(2)In the aspect of the system structure,the construction of the special textbook system is mainly based on the students’ cognitive development,and the basic knowledge is gradually extended to the application of knowledge to form a complete knowledge system structure;(3)In terms of presentation methods,attention is paid to the diversity of the layout and column design.However,it lacks the matching maps and columns corresponding to the “discipline intersection” knowledge.In terms of exercises,it pays attention to better implement the three-dimensional goals through the exercises,but neglects the detailed classification of exercises.Based on the conclusions of the teaching suggestions:(1)to understand the content of the perspective of selection,comprehensive training of students’ scientific literacy;(2)clear thematic structure of the system to help students gradually improve the knowledge system;(3)According to the functions required by the theme,integrate diverse presentation methods;(4)Pay attention to the dimensional classification of the design of exercises after class to ensure the consolidation of goals and the effective implementation of evaluation.The fourth part is the development of teaching cases.Based on the results of the third part of the research,relevant basic theories,and high school chemistry curriculum standards as guidance,the teaching case design and development of the“Chemistry 2” “Chemistry Power in Development” of the High School Education Press was conducted.The teaching suggestions of this case are as follows:(1)The prompts of the corresponding questions can be appropriately increased to better control the direction of the students thinking about the problems;(2)The students are assisted in the demonstration experiment by the teacher in the form of demonstration experiments.In the fifth part,we choose to compare the teaching effectiveness of the teaching case developed and designed by the control class.Price,and in order to propose the implementation of teaching strategies for this case.The sixth part,the initial results and prospects.Summarizes and summarizes each stage of the research results of this study;analyzes the existing deficiencies of the study,and proposes reference for follow-up in-depth research. |
