With the reform of new curriculum,a variety of teaching models have emerged,among which PBL teaching model,as a problem-oriented teaching model,has made some achievements in teaching research at home and abroad.Deep learning is a very important theory in current education research.At present,there are some problems in students’ learning in junior high school,such as lack of initiative,lack of close connection between theory and practice,etc.How to make students truly achieve deep learning has become a hot topic of concern.Deep learning requires students to old and new knowledge migration,critical thinking and creative thinking of students,let students really involved in the classroom,the properties of deep learning and the implementation of the objectives of PBL teaching proposes a bigger challenge for the implementation of the PBL teaching mode provides the theory instruction,both on the teaching aim,teaching method has a high degree of fit.The chapter "Lens and Its Application" is an important part of junior high school optical knowledge,which includes conceptual learning and experimental exploration,and is a key chapter for students to master the application of optical components.It reflects the idea of the curriculum standard "from life to physics,from physics to society".We have summarized the characteristics of deep learning and PBL teaching mode,and designs a PBL teaching process to promote students’ deep learning,which includes five steps: activating the original knowledge,generating internal driving force,restructuring and constructing knowledge,transferring and applying knowledge,summarizing and reflecting.The questionnaire and interview are used to investigate the current situation of junior high school students’ deep learning,I found that there is a certain distance between students’ current learning and deep learning,so the PBL teaching mode to promote students’ deep learning is applied to the practical teaching of physics course in Grade 8,and the detailed teaching record of "exploring the law of convex lens imaging" is made,so as to fully cultivate students’ thinking ability in order to improve students’ ability of self-learning and self-learning,it is essential to promote students’ deep learning.By using questionnaires,student performance analysis,interviews with teachers and students,this paper discusses the results of applying PBL teaching mode to junior high school physics classroom to promote students’ deep learning.The results of teaching practice show that students’ learning has been improved in different dimensions.The first is the cognitive dimension,students’ ability of knowledge construction and integration is improved,and the ability of knowledge transfer between new and old knowledge and disciplines is improved;the second is to enhance students’ critical thinking and innovative thinking in learning life;the third is that students’ enthusiasm for learning physics becomes higher,and students’ ability of cooperation and communication,self-monitoring and reflection are improved to varying degrees It has been improved.The average score of students increased from67.5 to 74.1,and the passing rate of class physics increased from 85.4% to 92.7%.From the improvement of students’ performance,it can be seen that the application of PBL teaching mode to promote students’ deep learning is positively correlated with students’ performance.Through the communication with teachers and students,teachers and students give positive attitude to the PBL teaching mode for the purpose of promoting students’ deep learning.The above conclusions show that PBL teaching mode can promote students’ deep learning.I hope this study can lay a good foundation for the further implementation of PBL teaching mode and provide experience and reference for educational reform. |