| As education reform intensifies,teachers are increasingly focusing on honing students’ mathematical thinking and problem-solving aptitude,rather than merely mastering fundamental knowledge and abilities.In the current education mode,although the country has long advocated "quality education","core quality" and"digital education",the actual education is still mostly exam-oriented education under the cloak of "quality education".As a systematic approach to curriculum design and classroom teaching,PBL provides a clear and rule-based path for "Teaching for the future" in China.In the face of the upcoming changes in education,teachers who are most closely connected with students should take precautions and prepare for the future in advance.Learning PBL has become the consensus of more and more teachers.The teaching design of primary school mathematics activities based on PBL can effectively help students use mathematical concepts,principles and methods to explain the phenomena in the real world and solve problems in real life.According to the relevant theories about PBL at home and abroad,this study combined with the new curriculum standards and the reality of primary school mathematics teaching,carried out a series of exploration of primary school mathematics activity teaching,took "Circle" unit as the main research content to carry out teaching practice,evaluated the teaching effect and gave teaching advice.Aiming at the fifth grade students of M primary school,according to their current knowledge level and learning difficulties,through the study of PBL,design a series of primary school mathematics activity classes based on PBL,including Understanding of the Circle and the Circumference of the Circle.In teaching design,students go through three stages:"question raising","question exploring" and"question verification".The effect of PBL learning has been demonstrated through various studies.It not only broadens students’ horizons and enhances their skills in applying mathematical knowledge,but also awakens their enthusiasm for learning,develops more potential wisdom,promotes cooperation and helps them solve problems better.Because PBL teaching mode requires students to have good cooperation and independent learning ability,has high requirements for teachers’professional level,and there is a big gap with the assessment standard,so the implementation of PBL faces great challenges.In addition,since PBL is problem-driven learning,there is no existing teaching plan for reference,so it is necessary to design it in combination with the characteristics of PBL and specific learning situation in practical teaching.The application of PBL in mathematics teaching also has certain limitations,and the integration of PBL and primary school mathematics classroom needs further exploration and research. |