A Case Study On Chemistry Teaching In Senior High School Based On Four-line Teaching Model

Case teaching is based on teaching cases and a student-centered teaching method.Through heuristic,discussion,and interactive teaching methods,students can improve their ability to analyze and solve problems,and promote their comprehensive development.China has a Chinese professional degree teaching case center to promote the widespread application of case teaching,but there are only 9 teaching cases on chemistry education.In order to enrich the teaching cases of professional degree in chemistry education,this study explores the teaching cases of using the four-line teaching mode to cultivate students' core literacy in chemistry,hoping to contribute resources to the case center and provide an example for teachers' teaching.This study is based on the theory of constructivist,mainly uses the literature analysis method and educational case method to conduct an in-depth analysis of the research status of four-line teaching mode,chemistry teaching case and high school chemistry core accomplishment.It is found that four-line teaching mode is an effective teaching mode for the development of core literacy in the chemistry discipline,and the case center lacks a teaching case about the feasible teaching mode of cultivating students' chemistry core accomplishment.Based on the principle and structural paradigm of writing professional degree teaching case,this study selects "chlorine and its compounds" and "ionization of electrolyte" in practice teaching about four-line teaching mode as examples to write two different types of professional degree teaching cases reflecting the cultivation of students' core literacy in chemistry.? Teaching Design of "Chlorine and Its compounds" Based on Four-line Teaching Mode ?is to select "chlorine and its compounds" in highschool chemistry as the teaching content.The section of "Chlorine and its compounds" is a section on learning about chlorine and its compounds knowledge is aimed at learning specific individual substances and is relatively intuitive.In this case,the protagonist of the case,Professor L,through the exploration of the core literacy of students,decided to use multiple "history lines,inquiry lines,knowledge lines and application lines" S-type four-line teaching ideas to promote the teaching process and cultivate students' inquiry,problem solving and other abilities to further enhance students' core literacy in chemistry.? Teaching Design of "ionization of electrolyte" Based on Four-line Teaching Mode? is to select "ionization of electrolyte" in high school chemistry as the teaching content."Ionization of electrolytes" is to learn about the knowledge of electrolytes,and the section of "Ionization of Electrolytes" is to learn the relevant knowledge of electrolytes,which is to learn about a class of general substances,more abstract.This case is that the protagonist of the case,through exploration of the essence of the electrolyte-related knowledge,decided to start from the perspective of the history of ionization theory and let students experience research and thinking like scientists.In the teaching,the teaching is carried out by the four penetrating methods of "history line","inquiry line","knowledge line" and "application line",so as to promote students to develop the chemistry core literacy such as "macroscopic identification and microscopic analysis" and "evidential reasoning and model cognition" on the basis of mastering the knowledge related to electrolytes.