The Design And Practice Of Chemical Layered Homework In Senior High School Based On Key Competencies

After-class homework has the function of diagnosing and developing the students' key competencies in chemistry,so chemistry teachers should try their best to play the value and function of homework.However,there are still some shortcomings in the traditional unified mode of homework,which can not meet the individual difference needs of students to teach students in accordance with their aptitude and promote the all-round development of students.Therefore,in order to solve the problems existing in chemical homework and improve the quality of chemical homework to promote the all-round development of students,this paper has carried out the practical research on layering design of chemical homework.In this paper,a large number of documents about layered homework are reviewed by literature method and the present situation of research at home and abroad is reviewed.On the basis of the relevant literature research,this paper uses the Academic Quality Standard of 《 the Standard of Chemistry Curriculum in General Senior High School(2017 Edition)》,the Theory of Aptitude Teaching,the Theory of Recent Development Zone and the Theory of Multiple Intelligences as a guide.Combined with the results of questionnaire investigation and the experience of teaching practice,it is proposed that the design of senior one chemical homework should follow the principles of hierarchy,interest,subjectivity and so on.This paper explains how to design differentiated and layered homework which accords with students' level according to different levels and academic quality standards through specific cases.In addition,the class 9 in senior one of school W is selected as the experimental class to carry out the chemical layered homework.Based on the comparison of the chemistry scores of the second monthly examination and the final examination as well as the case study of the three students in the experimental class,the effect of the practice is investigated and analyzed.The research shows that implementing the assignment mode of layered homework in the senior one chemistry teaching can improve the students' chemistry achievement,reduce the phenomenon of students' plagiarism and obviously increase students' interest in chemistry.