Practical Research Of "4D Efficient Class" Teaching Method In Junior High School Chemistry Teaching

China's new round of basic education curriculum reform has been fully implemented for several years.Based on the theoretical basis of the new curriculum reform,many new teaching methods have been used in Schools taught in Mongolian.Ulanqab Mongolian Middle School put forward the "4D efficient class" teaching method on the basis of learning from various domestic teaching reform methods.The "4D efficient class" teaching method strives to implement the new curriculum concept,based on students,and divides a class into four teaching links which are "independent learning,discover ","complementary cooperation,development","deepen,individuality" and "expanded use,divergent thinking".The thesis carried out a practical study on the implementation of the "4D efficient class" teaching method in the Mongolian middle school of Ulanqab City in the middle school chemistry class taught in Mongolian.The research mainly shows the basic process of the "4D efficient class" teaching method combined with specific cases,and demonstrates the "4D efficient class" teaching method to carry out classroom teaching.The teaching case selects "organic synthetic materials" that have a creative inquiry situation and the content of the course is closely related to human life.The design of the teaching content should work hard in the "independent learning and discovery of new knowledge" link before class.By arranging tasks before class to mobilize students' active to stimulate students to learn chemistry.As an experimental class "crude salt purification" teaching content involves a variety of junior high school chemistry experiment operations.In the teaching,the teacher guides the students to delve deeper and explore the knowledge manually,and provides each student with the opportunity to explore,display,and speak.The use of the "4D efficient class" teaching method in the review course "Simple Calculation of Chemical Equations" can enable students to fully use their brains to let them discuss,analyze calculation problems,and various displays to express their own ideas."Deepen,individuality" is an important part of this method and the key to problem solving.In the study of teaching practice,two classes in the third grade of Mongolian middle school in Ulanqab City were selected as the research object.The experimental class was taught using the "4D efficient class" teaching method,and the control class was taught using traditional teaching methods.Before the experiment,the SPSS data software was used to analyze the academic performance of the students in the experimental class and the control class,and a questionnaire survey was conducted on the students in the two classes.After the practice,in addition to the statistical analysis of the test scores,a second questionnaire survey was conducted on the students in the experimental class and the control class to understand the advantages and disadvantages of the "4D efficient class" teaching method in students' independent learning,cooperative learning,in-depth study and extended use.The teaching practice results show that the experimental class students using the "4D efficient class" teaching method have significantly higher test scores and practical ability than the control class.This proves that the "4D efficient class" teaching method is in line with the physical and mental development laws of junior high school students,and has achieved independent learning,cooperative learning,personality development,and divergent thinking to a certain extent.The learning activities in classroom teaching have cultivated students' ability to think independently and innovate,stimulated students' interest in active participation and willingness to explore,and improved students' ability to solve problems and cooperate and communicate.Through this practical research of the "4D efficient class" teaching method,I hope that more educators can understand the scientific and practical nature of the "4D efficient class" teaching method.The influence of the way to solve the problems of junior middle school chemistry teaching students will enrich the study of teaching methods in Mongolian-learning middle schools,and provide some practical experience for the effective use and promotion of "4D efficient class" teaching methods in the future.