Research On Classroom Management System For Middle School Chemistry Virtual Simulation Experiment

Chemical experiment plays an important role in chemistry teaching,which is important to stimulate students’ interest in learning and improve their scientific literacy.With the development of virtual simulation experiment technology,the classroom teaching of middle school chemistry virtual simulation experiment is gradually developed.Although the problems of traditional middle school chemistry laboratory such as the limitation of experimental environment and the shortage of experimental equipment are avoided by virtual simulation experiment,most of the functions of the virtual simulation experiment management system at this stage are relatively single,which is difficult to adapt to the specific teaching situation of the virtual simulation experiment classroom of the middle school chemistry subject,and the problem of information islands between most classroom management systems and the virtual simulation experiment environment is serious,and the system functions are not comprehensive.In order to improve the informatization and standardization of classroom teaching management of middle school chemistry virtual simulation experiment,this paper proposed a design and implementation scheme of classroom management system for middle school chemistry virtual simulation experiment.Based on the front-end and back-end separation architecture mode,the front-end and back-end are implemented by Vue and SpringBoot framework respectively,and the computer software technologies such as WebSocket and WebRTC are used.According to the virtual simulation experiment classroom teaching scene of middle school chemistry subject,the necessary functions of virtual simulation experiment classroom management such as experiment progress monitoring,online experiment guidance and experiment step control are designed and implemented.Nowadays,the application of student expression detection to classroom evaluation has also been included in the construction of smart education.This paper studied the facial expression recognition of students in classroom by using the CBAM attention module to improve the YOLOv4 network,proposed YOLOv4-CBAM network and realized the function of students’ expression recognition and learning emotion prediction.This paper innovatively proposed the application of a software development architecture that separated the front and back ends in the middle school chemistry virtual simulation experiment classroom management system,which optimized the classroom management experience,solved the problem of information sharing difficulties between traditional classroom teaching management software and virtual simulation experiment environment,and provided reference for the functional design and technical realization of the classroom management system of the middle school chemistry virtual simulation experiment.In terms of facial expression recognition of students,the experimental results showed that the YOLOv4-CBAM network proposed in this paper improves the original network’s attention to important feature information and improves the accuracy of facial expression recognition.