Teaching Research And Practice Of Hydrolysis Of Salts Based On Key Competency

Hydrolysis of salts is the focus of teaching in high school chemistry,and it is a major difficulty.In traditional teaching,the teaching methods used by teachers in the classroom teaching process are too singular,which can’t stimulate students’ interest in acquiring knowledge,nor can improve students’ ability to process knowledge and apply knowledge.It fails to achieve the expected teaching goals,and can’t develop students’ chemical key competency and comprehensive ability.It is particularly important for teachers to develop an effective teaching program to strengthen students’ ability to master knowledge and the chemistry key competency.This research will focus on aiming to complete the competence-based teaching design of salt hydrolysis,hoping to improve the traditional teaching situation,develop students’ comprehensive ability and provide reference for chemistry teachers.This paper uses the literature research method,the investigation method and the classroom observation method to conduct research.The research content is divided into five chapters:The first chapter introduces the source of the topic,and proves the necessity and feasibility of this research based on the teaching status of salts hydrolysis and the vigorous development of the key competency of the current education.Through reviewing the relevant literature,a literature review of existing research was conducted to understand the current research status of the country,to clarify the research purpose,and to determine the research methods and research ideas.The second chapter conducts curriculum standard analysis,textbook analysis and academic analysis on the hydrolysis of salts.It lists the core knowledge points,and corresponds the teaching content with the key competency,and formulates clear teaching objectives according to the level requirements of the chemical key competency.The third chapter is the key content of this research.According to the interview data of teachers and students and the analysis of the hydrolysis content of salts in the previous chapter,the teaching characteristics of salts hydrolysis are summarized.The chemistry key competency is integrated into the teaching process.There are three instructional designs based on the key competency,including "exploring the acidity and alkalinity of salts solution" and "the main factors affecting the hydrolysis of salts" and "the use of salts hydrolysis reaction".The fourth chapter is to carry out teaching practice and empirical research.The teaching design is applied to the actual classroom teaching.The experimental class and the control class are selected for teaching implementation.Through classroom performance,interview survey and questionnaire test,the teaching effect is analyzed.The fifth chapter summarizes and reflects on the research.It shows the research results and the problems in this research,pointing out the shortcomings in the research.Through this research,we can find that the competence-based teaching has achieved good teaching results.Compared with traditional teaching,students have a stronger grasp of the application knowledge of salts hydrolysis.The ability of using knowledge to solve problems is stronger,and comprehensive quality is better.In addition,the competence-based teaching method has improved the classroom participation of students,stimulated the interest and curiosity of learning chemistry,and made the classroom atmosphere more active,which has improved the classroom teaching of hydrolysis of salts.