Construction And Application Of Elementary School Science Knowledge Graph For The Connection Of Junior High School Physics Knowledg

Junior middle school is an important period for the physical and mental development of teenagers.The connection between middle school and primary school is an important task in junior middle school education.The degree of adaptation to the new environment of students entering junior middle school has a direct impact on their subsequent learning status.The concept of "two-way connection" was first proposed in the Guiding Opinions on Vigorously Promoting the Scientific connection between Kindergarten and Primary School issued by the Ministry of Education,which has great reference significance for the connection between middle and primary schools.The guidance emphasize the need of maintaining educational continuity between the two levels in order to minimize the slope between the two periods.Therefore not only does the middle school classroom converge to the primary school,but the primary school classroom also needs to converge upwards.Education is hungry for talent development,which surely necessitates basic education teachers using modern educational technology that is "quick and efficient" in order to increase teaching efficiency during class preparation.In the process of education and teaching,how to apply modern technology deeply and extensively to improve the problems existing in the bridging stage of middle and small schools is an important exploration direction of modern educational technology.At present,there are many problems in the teaching of junior middle school physics.First of all,primary school science encompasses physics,biology,chemistry and other disciplines.In the design of textbooks,the identical piece of knowledge is taught in different grades according to students’ acceptance ability.Therefore,the correspondence between science in primary school and physics in junior high school is not obvious.Secondly,in the actual teaching process,primary and secondary school teachers often expand the content of textbooks through their own teaching experience.How to select and expand the content within the objective scope to make the teaching content as much as possible to contain the knowledge of junior high school and at the same time suitable for the primary school learning to carry on the upward connection is a problem that must be solved.Based on the above problems,according to the characteristics of "multidisciplinary integration" of primary school science,this paper establishes a knowledge graph that can effectively link the physical knowledge of primary school and junior high school.The main work is as follows:First,the use of crawler technology to climb the First to sixth grade su Education edition of primary school science knowledge and su education edition of junior middle school physics knowledge.At the same time,we can supplement the knowledge points by crawling the subject professional websites to ensure the comprehensiveness of the knowledge points.Classify the two sections of knowledge according to the guiding spirit of the syllabus.Protege software is used to construct ontology of knowledge,and the combing and integration of primary school science and junior middle school physics knowledge is realized.This paper analyzes the structural differences between science in primary school and physics in middle school.Secondly,information extraction is carried out from "e-textbook network","Primary Science Teaching network","Suke Physics network" and Baidu,and knowledge elements such as entities,relations and attributes are extracted.Neo4j graph database is used to create knowledge graph that can connect physics of primary school and junior middle school.Thirdly,starting from the actual teaching of primary and junior high schools,the completed knowledge graph is used to carry out teaching design.Teachers can get accurate,fast,intuitive and effective application reference by comparing knowledge graph.In this way,teachers can quickly master the frame structure of knowledge points and students’ learning situation,adjust teaching strategies timely and accurately,grasp the key points and teach efficiently.For teacher,they can use this knowledge graph to effectively penetrate topic information based on students’age and aptitude,creating a firm foundation for kids to successfully transition into middle school.The knowledge graph provided by this research undoubtedly provides a fast and effective reference value for teachers in lesson preparation.