| In 2020,the Ministry of Education issued the Curriculum Standards for Chemistry in Senior High Schools(2017 Edition,2020 Revision),which suggested that "exercise should be situational in design,based on students’ existing knowledge and experience,and create reasonable and vivid problem situations to improve students’ ability to apply their chemical knowledge to solve practical problems".Situational exercises is a kind of exercises that integrate life application,social production,experimental inquiry and other situations with the "pure" chemical knowledge to be examined in textbooks,which can comprehensively examines,student’s ability to extract information and transfer chemical knowledge.It has a unique value in promoting the formation and development of students’ core literacy of chemistry and is in line with the new curriculum standards of the concept of education.Therefore,the study of situational exercises in the new and old textbooks is conducive to fully understand the value of situational exercises,to understand the new connotation of curriculum standards,to provide some reference for improving the quality and efficiency of the classroom,and to facilitate the teaching reform of chemistry courses.This paper consists of five parts: First,while clarifying the research background and significance,it summarizes the research status of exercises,situations and situational questions in textbooks at home and abroad,and introduces the research ideas,methods and innovations of this thesis.Second,define the important concepts in the paper and give the relevant theoretical basis of the paper research.Third,a comparion of the textbook content selection in the table of contents of the two editions is carried out.Chapter exercises with the same content are selected as the research object,and a detailed comparison is carried out in four aspects: chapter distribution and the number of situational exercises,type of situational sources,degree of integration between situation and problem,and difficulty of exercises.Fourth,questionnaire survey and interview research were conducted on the front-line teachers of high school chemistry according to the situation related to the use of situational exercises in the compulsory high school chemistry textbook of Luke edition.Fifth,summarize the conclusion of the comparative study of exercises in this paper,combined with the survey and research results of first-line teachers,and give reference suggestions on the use of situational exercises in The Textbooks of Luke Edition.Based on this study,the following conclusions can be drawn:(1)The proportion of situational exercises in the old textbook was 48.7%,while in the edition it is50.5%,which is an increase.(2)Compared with the old version,the proportion of situational exercises in the new textbook from social production situation and chemical knowledge situation is significantly increased.(3)Compared with the old version,the situation of situational problems in the new textbook and the problem of the problem are reduced by the number of problems in the level of single point structure and multi-point structure,and the increase of the problem of the abstract structure level is increased by eight percentage points.(4)The comprehensive average difficulty of situational exercises in the new textbook is slightly higher than that of the old compulsory textbook.(5)First-line chemistry teachers in senior high schools pay more attention to situational exercises in compulsory textbooks and focus on using and exerting their value.In the course of first-line teaching,the chemistry teachers should focus on the obstacles in the student situational problem solving process,strengthen the cultivation of the comprehensive application ability of the students,further excavate and exert the value of situational exercises in developing student’s core accomplishment,improving students’ subject ability,reducing the quantity and improving the quality of homework,and constructing efficient class. |
PDF Full Text Request