Teaching Design And Practice Of Chemical Calculation In Junior Middle School Based On The Key Competences In Chemistry

In 2013,the education authorities began to reform the curriculum of general high schools.And in 2017,the Ministry of Education issued revised curriculum standards for all disciplines,in which emphasized the need to implement the core qualities of each curriculum and to give full play to the role of each curriculum in comprehensively carrying out the Party's education policy and developing quality education,as well as in implementing the fundamental task of fostering virtue through education.After the release of the new high school chemistry curriculum standards,I had a opportunity to participate in a training on the interpretation of the core elements of high school chemistry conducted by teaching and research staff in my city.Through the training,I realized that the key to developing and nurturing the core chemical literacy lies in how to put these qualities and concepts into practice in each instructional design.Therefore,this paper explores what instructional design is more conducive to the development of students' core literacy to solve the current problem of methods and approaches to the development of students' core literacy in chemical calculation.This paper is divided into five sections to carry out the instructional design research of chemical calculation based on the core chemical literacy.In the first section,the introduction introduces the background of the study,the methodology,the process and the significance of the study.In the second section,we sort out the relevant core concepts and pedagogical theories through literature study.In the third section,the methods of instructional design for the development of core chemistry literacy are discussed form the ideas of the teaching design,the tactics of teaching design.In the fourth section,this article sets forth the teaching practice studying of junior high school chemical calculation based on chemical core attainment.First of all,through interviewing method and questionnaire survey,it understands the learning situation of students in the third year of middle school in chemical calculation,and the teachers' acquaintance of the chemical core attainment in the third year of middle school and the current situation of their cultivation of students,so as to get ready for better cultivating students' chemical core attainment in chemical calculation.Secondly,under the instruction of constructivism learning theory and humanistic learning theory,it conducts teaching design on the junior high school chemical calculation based on chemical core attainment.This article conducts the analysis of teaching design by taking "the simple calculation by taking advantage of chemical equation" and "the concentration of solution" as examples.Finally,two semesters of contrast teaching was carried out in the experimental class and the control class.The experimental class conducts teaching by employing the teaching design based on the chemical core attainment,and the control class conducts teaching by employing the traditional teaching mode.After the teaching practice,it contrasts the teaching effects between the experimental class and the control class through classroom observational method,interviewing method and experimental data analysis method.In the fifth section,the research conclusions are drawn.From the analysis of the study,it can be seen that the instructional design based on core chemistry literacy can develop great core chemistry literacy in students and effectively improve teaching effectiveness;at the same time,it enhances teachers' teaching ability and promotes their professional growth.