A Study On Stratified Teaching And Linking Teaching Of Chemistry Between Junior And Senior Middle Schools In Ethnic Areas

The elementary education of chemistry in China is divided into two stages: junior and senior high school.Junior high school students will begin to learn chemistry in the ninth grade.During this period,the curriculum standard reflects the enlightenment,which means students learn chemistry mainly from the interest and life experience.The content of chemistry textbooks in junior high school weakens the "systematic" and "profundity" of knowledge system in the arrangement and design.In addition to the pressure of the senior high school entrance examination,many junior high schools place more emphasis on the improvement of the senior high school entrance examination results and the rate of enrollment,ignoring the link and foreshadowing with the knowledge points of chemistry in senior high school.Although chemistry in senior high school starts from the foundation,it requires students to understand,analyze and apply.Besides,chemistry in senior high school is of systematic,theoretical,and comprehensive features,with a large amount of knowledge and high ability requirements.Furthermore,more attention should be paid to training students' scientific thinking and quality.As a result,many students find it hard to study chemistry after entering senior high school.It is very important for students to find a suitable teaching situation,to properly connect the knowledge points in the teaching process,and to build a bridge for their learning,which will play a very important role in the way of chemistry learning of senior highschool,and also lay a good psychological and knowledge foundation for the further higher education.Therefore,it is of great significance to study and make full preparations in the linking education of chemistry in junior and senior high schools.In the process of chemistry teaching in the first year of senior high school,teachers will connect and transit the chemistry knowledge of junior high school.However,due to the differences of students' mastery of chemistry knowledge,it is difficult to meet the needs of all students in the same class,so the teaching effect is not good.According to the characteristics of these classes in ethnic areas,combined with many years of teaching experience,and under the principle of reflecting the fairness of education,the author thinks that the above problems can be well solved by the stratified linking teaching.At the beginning of the school year,the students are divided into three levels: A,B,C(poor,medium and excellent)based on the factors of achievement,study habits,psychological characteristics and personal will.On the premise of the class-selection system of stratified teaching,the original administrative class remains unchanged,and in the chemistry classes the students study in the corresponding teaching class according to their own level.Due to the similar learning situation of students at all levels,class-selection teaching can effectively improve the efficiency of the classroom,and it is also useful for students to make targeted teaching objectives and teaching methods from the actual situation of students,which helps students at different levels construct knowledge system.Students can also quickly and efficiently enter the state of learning chemistry of senior high school,and really make a good transition and foreshadowing,so as to achieve balanced development which means that it makes good students better,and students with learning difficulties can keep up with others.This paper first makes use of the literature method to understand the current research progress of the subject,providing the relevant theoretical basis and experience for the subject.Then through the investigation of senior one student and senior high school chemistry teachers,the senior high school stratified teaching and the current situation and existing problems of the linking education of chemistry in junior and senior high schools are deeply understood in this paper.And then based on the analysis of junior and senior high school curriculum standards and teaching materials,taking Book 1-2 of senior high school compulsory textbooks as a unit,the author makes a detailed comparative analysis of the linking points between junior high school chemistry(PEP)and compulsory moduleknowledge of senior high school,so as to find a good starting point for teaching;then it briefly introduces the general situation of the school and the practical experience of the class-selection system of stratified teaching,puts forward the suggestions of the classification of chemistry levels,the principles of linking teaching in different levels,and summarizes the experience and shortcomings of the teaching model;in the end,according to the above researches,the paper designs a specific teaching case and summarizes the research.The purpose of this paper is to study stratified teaching and linking teaching of compulsory modules of senior high school textbooks,hoping to provide certain reference value and significance for the learning of students and teaching of teachers in junior and senior high school.