Survey Of Mechanics Concept Mastery And Teaching Design Of "Newton's First Law"

In the long process of learning physics,the ability to understand physics concepts thoroughly is the basis of mastering physics theorems and theories,and also the premise of further learning physics well.In the study of senior high school,the analysis of students' grasp and understanding of physics concepts will help senior high school physics teachers to change the teaching mode and improve the teaching design according to the corresponding situation,so as to make students' learning of physics concepts more effective.By analyzing the concepts involved in each test question and the possible thoughts of students,this study tested a total of 195 students from three science classes in the second grade of W middle school in liaoning province,three classes in different majors of science and engineering in guangxi normal university and a graduate class.By sorting out the concepts of the test questions and making statistics and analysis of the results,it was found that the students scored low on the questions involving the instantaneity of inertia and force,indicating that the students did not fully understand the relevant concepts of inertia.The specific misunderstanding mainly includes the following three points:1.After the external force disappears,it can still make the object move2.A force applied to an object is always acting and will not disappear3."keep the original motion state of the object unchanged when the object is under no force" is to maintain the original motion trajectory of the object.In view of the investigation,this paper designs a teaching design that breaks through the understanding of relevant concepts.According to the modern educational concept,the author designs three experiments to enable students to obtain the real experimental phenomena in the most intuitive way through experiments,and correct students' understanding errors in concepts such as inertia by triggering students' cognitive conflicts.To some extent,this study can provide reference for teachers in concept teaching.