Research On The Concept Of Acid-base In High School Students

With the development of education,scholars at home and abroad have increasingly researched on concepts,mainly focusing on concepts and their theoretical development,concept transformation and development,myths,and heterogeneous thinking.The "acid-base concept" is a very important core concept in the middle school.At present,there are few studies on the "acid-base concept" test.Through the test,students can understand the understanding of the acid-base concept and the level of cognitive development in different grades,so as to better promote the teaching of the acid-base concept.To carry out the research on the concept of acid and alkali in senior high school students is an important issue that needs urgent development.This study first analyzes the sequence and internal logic of the content of the acid-alkali concept in the chemistry curriculum standards and chemistry textbooks.It draws on the relevant research results in the domestic and international concept of acid and alkali to determine the five content dimensions of the concept of acid and alkali: "Common The acid,alkali and its performance,"the nature of acid and alkali ionization","the acidity and alkalinity of the solution","the influencing factors of solution acidity and alkalinity" and "strong and weak acid and alkali",and determine the concept of acid and alkali 4 levels: Know,understand,understand,apply,and prepare the acid-base concept questionnaire accordingly.Then,877 copies of the acid-alkali concept questionnaire were distributed to two high schools in Jining for actual measurement and data collection and processing.SPSS 21.0 software was used to manage and analyze the data,and the acid-alkali concept questionnaire was revised.The status of the different levels of the acid-base concept questionnaire was compared and compared to explore the concept of acid and alkali in different grades of students.The status of the concept of cognitive development.Finally,based on the research results,the research conclusions are clear and suggestions for the teaching of the acid-base concept change are proposed.Through the above work,this study draws the following conclusions:(1)The learning and accumulation of acid-base concept knowledge will improve the students’ level of cognitive development of the acid-base concept.(2)The scientific knowledge of the acid-base concept does not significantly change the student’s pre-scientific concept.(3)The learning and accumulation of the concept of acid and alkali will obviously reduce the student’s thinking about the concept of acid and alkali.The innovation of this research is mainly reflected in:(1)Prepare a set of questionnaires for the concept of acid and alkali for senior high school students.The design methods and ideas have a certain degree of innovation.(2)Analyze the development status of acid-alkaline concept cognitive ability in high grade one and grade two,and put forward constructive teaching suggestions for conceptual change teaching.