Exploration On The Teaching Of "Chemical Coordinate Image" ——A Case Study Of "Equilibrium Theory" In Senior High School

"Chemical coordinate image" is an intuitive representation of the process of scientifically expressing the change of chemical experimental data with conditions.In recent years,the ability requirements of students in "chemical coordinate image" in the high school academic evaluation and selection system have been gradually improved.The Chemistry Curriculum Standard for Senior High Schools(Edited in 2017)clearly reflects the requirements for students' ability to deal with chemical data and chart information.However,it is often seen the teaching mode of "large capacity,high density and fast speed" in the current chemistry courses,which leads to the difficulty of chemical image problems in teaching.There are difficulties and obstacles in the understanding and cognition of charts,which is contrary to the curriculum teaching concept of promoting students' all-round development and implementing the core literacy of chemistry.For high school chemistry teachers,how to use less time in the classroom to fully explain relevant key chemistry knowledge and truly develop students' subject core literacy is the problem they encounter.Therefore,it is of great significance to study how to effectively integrate and use "chemical coordinate image" in chemistry courses and optimize chemistry teaching process.This paper comprehensively adopts the methods of literature research,investigation,experimental research,paper and pen test and interview.This paper discusses the current situation and existing problems in the teaching of "chemical coordinate image" in high school chemistry,and puts forward the corresponding improvement measures and teaching strategies based on the analysis of the causes behind the current situation.Taking the teaching content of "equilibrium theory" in senior high school as an example,this paper attempts to construct the teaching process related to "chemical coordinate image",and carries out teaching practice research.It is expected to provide ideas and enlightenment for chemistry teachers to better carry out literacy teaching integrating "chemical coordinate image".This paper is mainly divided into eight parts.The first part is introduction,which mainly analyzes and introduces the research background,and presents the research objectives,methods and framework.The second part summarizes the relevant research status at home and abroad.The third part elaborates and discusses the characteristics,functions,classifications,common presentation situations and examination points of "chemical coordinate image" on the basis of literature review.The fourth part is the investigation design,implementation and result analysis of the current teaching of "chemical coordinate image".The fifth part puts forward the teaching improvement measures based on the investigation of the current situation and the teaching suggestions of different coordinate types of curves,discusses the teaching mode and strategy of effectively integrating "chemical coordinate image",and selects the "equilibrium theory" in Chapter 2 and Chapter 3 of the principle of chemical reaction,a compulsory course for senior high school chemistry of People's Education Edition,as the teaching design case and empirical content.The sixth part is empirical research,including selecting research objects,designing research tools(student test paper,interview outline for students and teachers),and discussing the effect of the proposed teaching strategy by comparing the results of pretest and post-test.The seventh part is the research results and analysis.The chemistry class focuses on chemical experiments and data image analysis and reasoning.While cultivating students' scientific thinking and application ability,they are also welcomed by most students.After a period of comparative teaching,the ability of students in the experimental class to understand and apply "chemical coordinate image" related problems has been improved to a certain extent,which shows that the proposed teaching strategy has a certain effect on the improvement of students' image information literacy and subject core literacy.Finally,this paper makes a summary and reflection,and puts forward teaching suggestions for deficiencies.It is hoped to provide reference for teachers to carry out effective teaching based on "chemical coordinate image".