Research On The Practice Of Problem-based Instruction In Junior Middle School Mathematics Teaching

The teaching mode of problem-based learning guidance refers that students can achieve the purpose of learning.The teaching mode of problem-based learning is student-centered,giving full play to the guiding role of teachers,starting from the whole teaching,highlighting the subjectivity of students,focusing on the development of each student,focusing on the development of students' thinking and self-awareness,which can help students to acquire basic knowledge,basic skills,basic ideas,basic activity experience,and improve students' discovery,proposal,analysis and solution of problems Problem solving ability.What is the current situation of the problem-based teaching model in junior high school mathematics teaching? The author conducted a questionnaire survey and analysis.It is found that there are some difficulties in the practice of problem-based instruction in junior middle school mathematics teaching: it is difficult for mathematics teachers to design proper and good problems before class;it is difficult to solve the contradiction between presupposition and generation in classroom teaching;teachers do not leave enough time for students to ask,think and answer;students do not develop the awareness and habit of asking questions,nor do they have the ability to ask questions Courage,do not ask in class,do not dare to ask,do not want to ask after class,lazy to ask.Further analysis shows that there are three main reasons for the formation of this situation:(1)the reasons of Mathematics Teachers: restricted by the rigid requirements of teaching quality,and not strong in teaching and research ability;(2)the reasons of students: lack of sense of achievement,lack of initiative in learning,and not forming good mathematics learning habits;(3)the reasons of family and society: family education environment The differences,the impact of examination system on students' opportunities for further study,and the lack of teaching and research activities for problem-based learning guidance.How to make a more suitable and effective mathematics teaching strategy based on the problem-based teaching model has become an urgent problem to be solved.Based on the above,this paper attempts to study the application of the problem-based teaching model in junior middle school mathematics teaching from both theoretical and practical aspects,in order to improve the effectiveness of junior middle school mathematics teaching.This research mainly expounds the research results from two aspects: theoretical research and practical research.In the aspect of theoretical research,first of all,I sorted out the domestic and foreign researches on the concept,links,principles and implementation strategies of the problem-based learning teaching mode,defined the relevant concepts of the problem-based learning teaching mode,and extracted the theoretical basis and basic links of the problem-based learning teaching mode;secondly,in view of the above survey status,I proposed the problem-based learning teaching mode in junior middle school mathematics from three aspects Application strategies in Teaching: first,set up questions scientifically and ask for implications.Including:(1)clear purpose,targeted;(2)interest introduction,stimulate interest;(3)progressive questioning,variable expansion;(4)building framework,improving literacy.The second is to guide thinking in a timely manner.It includes:(1)mastering the way of asking questions and promoting the generation of questions;(2)analyzing the thinking of questions and exposing the thinking process.Third,we should promote the formation of habits.Including:(1)encourage students to ask questions and cultivate questioning ability;(2)attach importance to hands-on record and form problem awareness.At the same time,it also provides the corresponding application strategy cases;finally,taking the "isosceles triangle nature" section as an example,the application of the above strategies in classroom teaching design.In the aspect of practical research,first of all,take the form of teaching design of isosceles triangle as the template,and use the application strategy of problem-based learning teaching model in junior middle school mathematics teaching to carry out the corresponding teaching design for the eighth grade mathematics.In the eighth grade of the internship school,two parallel classes were selected for one semester of teaching experiment.The author teaches,the control class carries on the conventional teaching,the experimental class uses the question guidance teaching design which uses the strategy to carry on the classroom teaching.The experimental results show that: the experimental class students' mathematics performance is significantly improved;the enthusiasm to solve problems and the flexibility to solve problems are improved;the ability to find and put forward problems is enhanced;the awareness of promotion and innovation is enhanced.The innovation of this study is mainly reflected in the research perspective and research results.The innovation of the research point of view is reflected in the application strategy of the problem-based teaching model in junior high school from three aspects: Teachers' preparation,teaching implementation and students' habit cultivation.The innovation of the research results lies in that based on the "dialogue" teaching,the teaching mode of question guidance can bedivided into three parts: questioning,thinking and answering.Combined with practical cases,the paper summarizes the functions of interactive and task-based questions according to these three parts.