Design And Application Of "Question String Teaching" In Junior Middle School Mathematics Teaching

"Question string" refers to a series of questions designed by teachers according to teaching objectives and students' cognitive level,according to a certain mathematical concept,proposition,application and so on,which can promote the achievement of teaching objectives."Question string teaching" refers to the use of the above question string as a "pointer" for teaching.The research methods used in this paper are literature research,questionnaire survey and classroom observation.The main contents of this paper are as follows:(1)By means of literature analysis,the author summarizes the existing research on "question string",defines the core concepts of this topic and summarizes other research on "question string".(2)Designing questionnaires to understand and analyze the current situation of "problem string teaching" in junior high school mathematics;(3)Combining the theoretical basis of problem string,putting forward effective suggestions to solve the problems in middle school;(2)Summarizing and summarizing the design strategy of "problem string" and carrying out teaching design;(4)Applying teaching design to practice,using classroom observation method,testing "problem" from observing students' classroom behavior.The implementation effect of "string teaching";(5)Summarize the research conclusions and put forward suggestions for implementation.The research conclusions of this paper are as follows: 1.The concept of question string and question string teaching is defined: question string is a series of questions designed by teachers according to teaching objectives and students' cognitive level,according to a certain mathematical concept,proposition,application and so on,which can promote the achievement of teaching objectives.2.Questionnaire survey method is used to study the current situation of "Question String Teaching".Front-line teachers are eager to understand more systematically the problem strings teaching,the class type of using the problem strings teaching is obvious,and the reflection and improvement of the problem strings teaching after class is not enough attention.3.In view of the above situation,the author puts forward:(1)the design process of problem string teaching: pre-class analysis-Design of problem string-Implementation of problem string-Reflection and improvement;(2)the types of problem string,namely,situational problem string,cohesive problem string,objective problem string,discriminatory problem string,applied problem string and summary problem string;(3)the establishment of problem string.Principles of design: goal-oriented principle,life interest principle,hierarchical progressive principle,inspiration thinking principle,exploration and innovation principle and the principle of different courses;(4)Examples are given to illustrate which design principles design which type of question string in concept class,proposition class,activity class and exercise class,and each provides a teaching design.4.The results of the study in the third part are carried out in teaching practice,and classroom observation is carried out with controlled experiments to illustrate the effectiveness of the "question string teaching" proposed by the author.