Research On The Teaching Design Of Elementary School Mathematics "decimal Multiplication" Based On "question String" Teaching

The deepening of curriculum reform attaches importance to students' initiative and consciousness.,so "problem-based teaching" has been favored by the majority of mathematics teachers.As a special form of "problem teaching",the teaching of "question string" has gradually become one of the important directions of the reform of mathematics classroom teaching."Question string" teaching is a teaching strategy for teachers to guide students to gradually master knowledge and develop thinking through a series of closely related problems.This research will take the "decimal multiplication" unit of the fifth grade of Soviet Educational Press as an example to study the teaching design based on the "question string" teaching,and explore the general ideas and methods of the primary school mathematics teaching design under the guidance of the"question string" teaching.Firstly,this study makes a thorough study of the theory of "question string" in the field of mathematics education,and constructs the basic framework of the primary school mathematics teaching design based on "question string" teaching.Then we use the survey method to understand the students' learning situation and the current teaching situation of "decimal multiplication" in order to ensure the rationality of the teaching design of "decimal multiplication" based on,question string" teaching.On this basis,the author studies the teaching content of "decimal multiplication" unit from four parts:teaching objectives,teaching content,teaching process and teaching evaluation,and puts forward specific teaching design scheme.Finally,through the implementation of teaching design,the author finds that the application of "question string"teaching in primary school mathematics teaching can not only improve students' interest in mathematics learning,but also improve students' learning attitude and way.Reflecting on the teaching design and classroom implementation of "decimal multiplication" unit,the author suggests that traditional teaching should be combined to standardize classroom discipline and improve teaching efficiency in the use of problem string teaching;in the teaching design,attention should be paid to the "real problems" of students and to the design of "problem string" for all students.