Design And Implementation Of K12 Online Learning System Based On IRT

The combination of the Internet and traditional industries has created new value and brought convenience to people,and consequently improved the quality of people's life.Online education is just the combination of the Internet and traditional education.According to the survey,K12 online education(kindergarten through twelfth grade,refers to the primary school to high school education system)only accounts for 2.7% of total online education market share in China in 2016,and most products are mono-functional Internet or computerized systems which only aim at a single learning activity for students during the whole learning cycle.Thus an integrated K12 online learning system,which includes testing,diagnosing and analyzing,homework,sharing resource,communication between parents and teachers,is required.In this work,we develop a comprehensive and personalized K12 online learning system.The system adopts Spring MVC and MySql and MongoDB,includes major basic functions such as test,diagnosis,analysis,practice,resource sharing,communication between parents and teachers.It employs Item Response Theory and Computerized Adaptive Testing technique to get knowledge of the student's vulnerabilities in study in the test stage.Then it provides personalized learning plan to solve the problems in the process of learning based on every student's actual situation.At the same time,by means of methods such as pushing information,the system makes the students' learning information to be known timely by the parents,even not around their children.In addition,by means of the functions such as intelligent examination paper making,on-line homework,learning report,it can help teachers to make examination papers and provides individualized tutorship.The work can mainly be concluded as follows: First of all,by investigating the current domestic and foreign research situation and application of K12 online education,we propose the scheme to construct a comprehensive K12 online learning system based on the Item Response Theory.Secondly,we analyze requirements and study the feasibility about the five subsystems(question bank management subsystem,platform subsystem,operations management subsystem,log management subsystem,timing task management subsystem),then we plan the system's structure and the business process,extract the system main function points and analyze the additional non-functional requirements of the system.Thirdly,we design the modules and operation process for sub-functional modules of the question bank subsystem and platform subsystem,and optimize the algorithm during test stage in the student terminal.Moreover we design the database table of system based on the design of database and E-R diagrams.Finally,we complete coding work of main functional modules.The online learning system organically connects students,parents and teachers.By combining with the classroom education,it will improve the teaching effect.