Investigation On The Causes Of Salt Hydrolysis Errors In High School Students And Research On Correction Practice

Error occurs in problem solving is an inevitable common phenomenon during chemistry learning,chemical problem-solving errors are gradually being paid attention to,especially the causes of chemical problem-solving problems have become an important issue for people to study with people's in-depth study of problem solving.UNESCO also pointed out that "students should be studied for mistakes and mistakes should be used as a means to understand students' thinking patterns" at the 19th national education international conference.Studying student's problem-solving errors is conducive to teachers' teaching and student learning which meets the purpose of improving student learning styles advocated by the new curriculum reform.In view of the importance of salt hydrolysis knowledge module in the study of chemistry knowledge and its important value in the conceptual construction and ability formation,therefore,investing the causes of errors in solving questions of salt hydrolysis in senior high school students and correcting,which basing on the salt hydrolysis knowledge module.This paper is divided into five parts.Introduction is the first par,including the reasons for the research,the significance of the research,the research content and objectives,the research methods and the the research process.The second part is to sort out and analyze the literature on the causes of the problems and the research on salt hydrolysis at home and abroad.The third part is the theoretical basis of this study,including problem solving and teaching diagnosis.The fourth part is practical research,divided into two parts,The first one is to investigate and research students'understanding of mistakes in the second year of high school students and to classify and summarize student error types,The second is to correct problem-solving errors of salt hydrolysis by classroom teaching,group counseling and individual counseling.The fifth part is the conclusions of the study and the teaching suggestions for salt hydrolysis and tips for dealing with student errors.The conclusions obtained in this study are:(1)Pay attention to the problem of incorrect hydrolysis of salts and the problem-solving cause are important for guiding the teaching of salt hydrolysis and student learning;(2)Although teachers and students pay more attention to the wrong questions,the analysis and using of the wrong questions is not enough;(3)The type of salt hydrolysis problem can be divided into understanding and characterizing errors in problems,formulating mistakes in problem-solving plans,errors in executing problem-solving plans,and introspect the errors caused by insufficient understanding,the main type of salt hydrolysis problem solving is the formulating mistakes in problem-solving plans.(4)correcting problem-solving errors of salt hydrolysis by classroom teaching,group counseling and individual counseling during teaching practice obtains significant teaching results.According to the conclusions of the study,the recommendations for the teaching of salt hydrolysis are:establish a systematic salt hydrolysis knowledge network;diversified teaching methods enhance understanding of salt hydrolysis knowledge;Teaching of the salt hydrolysis based on students' existing knowledge foundation;focus on the level of knowledge,from simple to complex,progressive.According to the conclusions of the study,the teacher's suggestion for dealing with students' wrong questions are:the principle of dealing with wrong students(targeting principle,timeliness principle,enlightening principle);strengthen the students' attention to the wrong questions and guide the correct establishment and use of the wrong question sets.