The 2017 version of the new curriculum standard puts forward the importance of modeling in the process of learning physics.The "China College Entrance Examination Evaluation System" issued in 2019 clarifies that the college entrance examination focuses on examining students’ ability to deal with practical problems in life practice;However,in contrast to the current situation of classroom teaching,teachers pay attention to cultivating students’ problem-solving skills and solving exercises instead of solving practical problems.Such education is not conducive to the development of students’ thinking and stifles their desire to observe the natural society,so classroom teaching reform is imminent.Primitive physical problems are interesting and open.Replacing physical exercises with primitive problems can not only cultivate students’ modeling ability,but also exercise their ability to solve practical problems.By consulting relevant literature,the author understands the research status of primitive physical problems and physical modeling at home and abroad;Then the concepts of physical model,original physical problem,physical modeling ability and modeling ability based on original physical problem are defined.Finally,the theoretical basis of the thesis is established from four aspects: constructivism theory,humanism theory,Marxist philosophy theory and problem teaching theory.At the beginning of the study,the author first got a preliminary understanding of the current situation of students’ solving primitive physics problems and building models through tests,and then interviewed students whose answers were good,medium and poor,so as to further understand students’ views on primitive physics problems and modeling at different levels,so as to design effective teaching strategies.By consulting the literature and combining the students’ learning situation and pre-test,the author summarizes the original problem modeling teaching strategies suitable for our school:(1)guiding students to experience the transformation from objects to models,and cultivating the ability of abstraction and image representation;(2)Summarize the thematic model to cultivate students’ ability of assignment,method and physical representation;(3)solving the original physical problems by using the representation worksheet;After that,teaching cases were designed in combination with teaching strategies,and two classes with no significant difference in answering questions before the test were taken as practice objects for two months.After that,the two classes were tested by using the post-test paper.The test results show that there are obvious differences in the ability to answer the original physical problems and model the two classes under different teaching schemes.The practice results show that the teaching strategy of cultivating high school students’ modeling ability based on primitive physical problems can really improve students’ physical modeling and learning.Therefore,it is meaningful to study the teaching strategy of cultivating students’ modeling ability based on the original physical problems.Not only that,but also it is an opportunity for teachers to improve their professional ability. |