Research On Practical Teaching Of Inquiry Activities For Developing Chemical Change Concept Of High School Students

The goal of high school chemistry teaching is to develop students' core chemistry literacy.The change concept is an important part of the core literacy of chemistry,and the development of the concept of change is of great significance for the formation of students' core literacy.Taking the effective implementation of the concept of change as the starting point,this thesis studies the teaching of inquiry activities on the basis of the development of students' concept of change,designs and implements corresponding teaching cases,and summarizes the influences of the inquiry activity teaching on the development of the students' change concept in high school.It provides a reference for the development of high school inquiry activities and the construction of the change concept.Through a literature review on the basic idea of chemistry,the core literacy of chemistry,the concept of chemical change and the related research of the inquiry activities at home and abroad,the connotation of the change concept is further refined in this thesis based on the hierarchical division of the change concept in the 2017 version of the high school curriculum standard.According to the educational practice,by choosing PEP Edition Elective Four Textbooks and making full use of the exploratory columns of the textbook,we carry out practice teaching for developing the reform idea.Finally,the practical effect is analyzed and summarized through test and interview.The results show that the inquiry activity teaching obviously improves academic performance.The students' ability of understanding the limit of chemical reaction and the characteristics of equilibrium state as well as chemical calculation is remarkably improved compared with that before the practice.And the inquiry activity teaching is very helpful to develop students' idea of reform.In the inquiry activities,the students enhance their ability to solve the practical problems by putting the question,thinking about the causes,communicating each other and summarizing the process on the actual situation with specific knowledge and scientific methods based on the change concept.However,although the students' change concept has been developed,the development of change concept literacy level 4 is inadequate.Students' ability of comprehensive analysis and multi-perspective vision is relatively weak.Based above research results,some teaching suggestions for inquiry activities based on the development of change concept is proposed.Firstly,create a real problem situation to stimulate inquiry awareness.Questions are the starting point of the entire inquiry activity.In teaching,it will be best for students to discover and ask questions by themselves,which can make the activity work smoother.Secondly,focus on the inquiry process to form subject thinking.Teaching process should reflect the inherent logical relationship between the knowledges,and help the students to apply specific knowledge and choose appropriate and scientific methods to form problem-solving thinking.At last,pay great attention to the teaching evaluation so as to improve the teaching effects.According to teaching evaluation results,a timely adjustment of the teaching activity will help the students to develop change concept.