Study On The Representation Of Physics Knowledge And The Solution Of Physics Problems

In the stage of basic education in our country,teachers devote particular care to the strategy of"test sea tactics",only pay attention to the teaching of physical knowledge,resulting in students study physics just for the test,thus neglecting the representation process of students' physical knowledge points.With the continuous reform of curriculum standards,the physical discipline pays more and more attention to the cultivation of students' ability to solve physical problems and the embodiment of the nature of the physical discipline.In view of this phenomenon,many scholars have carried out research on the solution of physical problems,but they are not deep enough.Therefore,based on the characterization of cognitive psychology theory and piaget's dual constructivism as the theoretical basis,understand the way for students to solve the physical problems,increase the curiosity of students to learn physical knowledge,thus improving the students' physical discipline core literacy,cultivate the students' all-round development,for the students to solve the problem of physical research conclusion provides advice.The research contents are mainly from the following aspects:(1)The literature research method is adopted to study the internal and external forms of knowledge representation:the internal form of representation is the information processing process of knowledge,and the internal representation mainly includes two aspects:appearance representation and symbolic representation.(2)The explicit representation model of physical problem solving is proposed:The physical problem solving process consists of four steps in turn:literal representation,graphic model representation,physical representation and mathematical representation.The case study shows that:? Most of the students show a low level of representation of physical problems,medium to upper level and higher level of students are relatively low.? According to the students' answers,few students have written descriptions of the physical problems.? There is no gender gap between male and female students in the representation of physical problems.(3)After the analysis of the effects of four representations in the questions,it can be concluded that the students' problem solving situation has been improved.Through the questionnaire survey,it is found that students are more conducive to analyze physical problems after the presentation of physical problems,and their ability of representation of physical problems has been improved.Based on the conclusion of this study,some suggestions for physics teaching are given:First,when teaching physics knowledge,teachers should use the combination of text and schema to improve students' interest in learning physics.Second,teachers can refine physical problems in the form of text representation,graphical model representation,physical representation and mathematical representation,and clarify the steps of physical problem solving,so as to reduce the difficulty of physics problems and help students develop good habit of doing problems.