Practice Research And Teaching Design Of Chemistry Experiment Of High School On Problem-Based-Learning (PBL) Teaching Model

The 2017 version of the new curriculum standard first proposed the core literacy of the chemistry subject,and pointed out that teachers should carry out "literacy-based" chemistry experiment classroom teaching,advocate the creation of real problem situations,and carry out a variety of inquiry activities.Under this background,this study attempts to solve the problems in the current traditional experimental classroom teaching.The problem-based(PBL)teaching model is applied to high school chemistry experimental teaching to enable students to master knowledge and improve problem solving skills.This article takes constructivism theory,problem-solving theory and higher-order thinking ability training theory as the main theoretical support.It uses the literature method,questionnaire survey method and interview method to sort out the current research results of the problem-based(PBL)teaching model and the current high school chemistry experiment teaching current situation.The basic structure of the Problem-Based-Learning(PBL)teaching model is constructed by analyzing and combing the experimental content in chemistry compulsory 1,in which it is based on the current situation of problem-based teaching and learning in the experimental teaching of chemistry compulsory 1 in high school and on the basis of consulting a large number of documents.According to the three types of experimental teaching cases which are designed in the research,and finally it carried out in Wuhai No.10 Middle School,and obtained some valuable results.Following are the results:(1)After implementing the PBL teaching model in the experimental class to teach the content of the chemistry compulsory 1 experiment.It was found that the results of the experimental class students were significantly higherthan that of the control class,which was of some help to improve the students' chemistry scores.(2)Implementing the PBL teaching model in high school chemistry experiment teaching improve the students' ability to find,analyze and solve problems to a certain extent.(3)The application of the PBL teaching model in high school chemistry experiment teaching is conducive to breaking through the teaching key points and solving difficulties,highlighting the experimental characteristics,training and improving the students' basic operation ability,from "seeing experiment" to "doing experiment",from classroom to laboratory Students consciously design experimental schemes,operate experiments freely,observe experimental phenomena autonomously,and experience the fun of experimental exploration.(4)The implementation of the PBL teaching model can update the teaching concept of teachers and improve the relationship between teachers and students.In short,the PBL teaching model studied in this paper is implemented in the high school chemistry compulsory 1 experimental teaching,not only can cultivate students' ability to analyze and solve problems,it is of great help.Simultaneously,cultivating and developing students' which the core literacy of chemistry subject of macro identification and micro analysis,scientific inquiry and innovative consciousness,spirit and social responsibility.And realize the "literacy-based" chemistry experiment classroom teaching.