Physics is a highly comprehensive subject.In the context of today’s information age,highquality information-based physics teaching resources emerge in endlessly.At the beginning of 2020,online classrooms have become the only way for primary and junior high schools to implement the education policy of the Ministry of Education during the epidemic prevention period.Online classroom has effectively solved the issue of delayed semester.By studying the problems in junior high school physics online classroom and proposing practical online classroom countermeasures,the concept of "advocating diversified teaching and encouraging information fusion teaching" proposed by the physics curriculum standard can be further implemented,and the junior high school students’ abilities can also be improved,meanwhile,the students’ frontier vision of physics and the development of information teaching is also promoted.Based on the collection and analysis of a large number of documents,the concept and characteristics of online classroom teaching are clarified.The theoretical basis of online classroom teaching model is expounded from three aspects: blended learning theory,blended instructional design principles,and constructivist learning theory.In order to research the teaching of online courses,teachers and students from three domestic junior high schools are selected to conduct a questionnaire survey focusing on the problems in online classrooms and the acceptance to the later development of online classrooms.The survey result analyzed by Excel indicates problems in three aspects: teachers,students and online platforms.On the part of teachers,many teachers lack the knowledge and theory of online classroom.Teachers’ ability to use information-based teaching technology is insufficient.Teachers’ teaching styles are rigid and their enthusiasm for online teaching is too low.For students,they show low efficiency due to decentralized space in online classroom.As a result of insufficient supervision of online learning,student participation in the classroom is low.Students using electronic products for a long time may pose potential risks to their health.In terms of education platforms,the network delay is obvious;the effect of online classroom evaluation is simple and insufficient;the effectiveness of monitoring student learning is too low;high-quality digital teaching resources provided for teachers are not rich.Corresponding countermeasures are put forward for teachers,students,school and even education related departments.In order to solve the teahcers issue,schools and relevant departments should pay attention to teacher information technology training and establish specialized talent services;carry out online and offline simultaneous teaching,establish incentive and compensation mechanisms,and improve the online education enthusiasm for teaching.For students participating in online learning,they are recommended to formulate classroom goals and learning plans,pay attention to pre-class preparation and afterclass homework,improve learning efficiency and reduce the time spent on electronic products.It is hoped that relevant institutions that supervise online teaching can strengthen the management of course forums and create a positive online learning atmosphere for students.Teachers are supposed to design optimized online courses to fully mobilize students’ learning initiative.Finally,suggestions for relevant online platforms are strengthening network function management,establishling a reasonable and effective online supervision and evaluation model and building an online courses resource platform across schools to achieve high-quality resource sharing.The study found that most physics teachers directly copy the teaching content of traditional courses to the online courses.To this end,a targeted teaching strategy is proposed.A brandnew teaching design is carried out according to the proposed teaching strategy and teaching practice is carried out in a class.Then a questionnaire combined with back-end data feedback is designed to evaluate the learning effect of students under the new teaching mode.Students are demonstrated to be more interested in the optimized teaching mode and are satisfied with the teaching effect of this mode.The research shows that the proposed strategy can not only further improve the initiative of junior high school students to learn physics in online classrooms,but also provide practical support for online courses of junior high school physics.It even proved to be a reference for the decision-making of parents,schools and relevant education departments. |