Chemistry Teaching Practice Based On The Concept Of Change

The basic concept of chemistry refers to the students' understanding of the general view of chemistry on the basis of understanding the characteristics of chemistry.It has lasting value and migration value.Cultivating students' basic concepts of chemistry correctly can improve students' cognitive ability,promote the development of students' thinking ability and contribute to the sustainable development of students' learning.The view of chemical change is one of the basic concepts of chemistry,which is the basic view of cognitive objects on common substances and their changes in daily life.Paying attention to the construction of students' view of chemical change in teaching practice is helpful for students to develop chemical scientific thinking,make meaningful study,and improve students' scientific literacy and sustainable development of study.On the basis of the existing literature research on the construction of the concept of change and the teaching of concept construction,this paper makes an investigation,practice and research on the concept of change for senior high school students.According to the results of the questionnaire and the comparative experiment,it is concluded that the teaching based on "the construction of chemical change concept" in the chemistry teaching of Senior 2 has practical significance and research value,and can realize qualitative change breakthrough on the basis of original quantitative change.The thesis chooses the second chapter of "Principles of Chemical Reactions" selected by Principle of chemical reaction as the research object,and takes the practical research on how to construct students' view of chemical change as the theme.On the basis of the existing theoretical research on basic concepts or concept construction of chemistry,the thesis makes in-depth research and analysis on curriculum standard analysis,teaching material analysis,teaching implementation and other aspects of the content of this chapter,and proposes a teaching design based on the view of chemical change.From the perspective of high school chemistry change concept,this paper makes a preliminary exploratory study on clarifying the structural system and knowledge system of teaching materials,promoting the effective implementation of teaching design and classroom practice of high school chemistry curriculum,and cultivating students' change concept of chemistry change in high school chemistry reaction rate and chemistry balance curriculum.The research shows that in high school chemistry teaching,teachers guide students to form a correct view of change,which is helpful for students to better understand the nature of substances and their chemical changes,and help students transfer and apply chemical knowledge.In actual teaching,the teaching design based on the concept of chemical change and the emphasis on training thinking can help students understand knowledge and promote the development of students' cognitive field.It is hoped that it can have some inspiration for teaching practice.