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1.INTRODUCTIONTraditional teaching is the use of blackboard, chalk, teaching AIDS and other media, under the teacher’s explanation of knowledge and skills. In this process, the teacher as the leader of classroom teaching, students can only passively accept knowledge, the efficiency of classroom teaching is not high. With the continuous development of information technology, teaching methods with multimedia technology as the core are widely used in the classroom field. More and more teachers begin to proficiently use modern teaching methods such as multimedia, which not only changes the traditional teaching mode, but also enriches the classroom teaching content, enlivizes the classroom atmosphere and improves the classroom teaching effect. In essence, computer-assisted instruction refers to a concept that combines practical teaching activities with information technology. Teachers can use computer technology to help complete traditional teaching work, interact with students in class or after class, transfer teaching resources in real time, arrange teaching progress scientifically, and control student information in an orderly manner. According to the accumulated experience of practical teaching, the computer-assisted teaching mode can provide students with a high-quality personalized learning environment, and comprehensively use technical means such as knowledge base, network communication, artificial intelligence, hypertext and multimedia to solve the problems of single traditional teaching situation and one-sided teaching knowledge, which can shorten students’ learning time and improve classroom teaching efficiency. Truly achieve the optimal teaching objectives. For teachers, computer-aided instruction has rich intelligent module functions, which can simplify practical work steps and provide more time and space to design high-quality teaching systems for students.[1-5] From the perspective of educational guidance in recent years, multimedia technology mainly has the following forms: first, text and narration; Second, patterns and illustrations; Third, still photos; Fourth, charts and graphs; Fifth, video and animation; Sixth, music and sound. The key characteristics of multimedia include the diversity, integration and interactivity of information carriers. For computers, the diversity of information carriers refers to the diversity of information media, which continuously expands the spatial scope of computer processing information, not only limited to numbers, texts and graphics, which can make computers more humanized. Integration refers to the integration of different electronic information together, and finally presents a number of contents such as data, text, graphics, and so on, to truly simulate the real world; Interactivity refers to the real-time exchange of information between those who transmit information and those who receive information, which will organically combine computer technology and performing arts to make information transmission and acquisition more artistic and appealing. From the perspective of practical research, almost all the research objects of specific disciplines can be practically represented, in other words, all subject teaching can be carried out on the computer. Therefore, after understanding the current situation of multimedia technology and traditional teaching, this paper mainly explores the three-dimensional teaching system based on the multimedia perspective, and then from the perspective of ideological and political education of college curriculum, defines the application function module of the three-dimensional teaching system, so as to provide an effective basis for education reform in the new era.[6-7] 2.METHOD2.1Function ModulesThe three-dimensional teaching system from the perspective of memory multimedia integrates multimedia teaching resources, integrates curriculum development into the teaching management system, allows teachers to edit according to teaching needs and course content, integrates multimedia technology to complete teaching design and lesson preparation and guidance, and flexibly manages backstage teaching resources, problem bank and information database. It truly reflects the teaching reform goal centered on students’ self-development, and fully controls students’ autonomous learning and classroom communication. The whole system uses database, multimedia network editing tools, demonstration and playback tools and electronic pens, etc. The specific price is shown in Figure 1 below: The client function modules provided by the overall system include media media module, resource management module, courseware editing system, lesson preparation system, classroom teaching demonstration module, etc. The specific price is shown in Figure 2 below:[8-11] First, resource management. In the rapid development of multimedia technology, 3D teaching system can realize the integration and sharing of different resources in different environments, and truly realize the intelligent and digital development goal of resource management. From the perspective of system operation, resource management module will divide teaching into two categories, on the one hand refers to teaching data resources, on the other hand refers to student data resources. After following the basic principle of teaching students according to their aptitude, there are deviations in the teaching progress, teaching methods and teaching contents of each individual student in each class. Through intelligent data management and comprehensive consideration of students’ personalized development goals, it is clear that teachers will teach two or more different courses at the same time, so the course data and student data of resource management module become crucial. When the system starts initialization and after starting this function, the user can inquire the application in the directory management module and the student management module according to the demand. In addition, the system can also open different types of data information in the same environment. Second, courseware editing module. This feature uses Intemet Explore as a display platform to help users complete the design and presentation of courseware and lesson plans, including courseware editing, courseware lists, classroom quizzes, electronic blackboard and other functions. Third, lesson preparation system. The teacher’s lesson preparation system is proposed according to the needs of students, and has many functions such as students’ receiving knowledge in class and feedback information after class. Teachers can collect and analyze the results of online teaching in a targeted way, scientifically adjust the next teaching progress and teaching content, change the traditional single teaching mode, and directly make courseware and play it.[12-15] Fourth, classroom teaching module. The three-dimensional teaching system will integrate the three-dimensional classroom teaching, the intelligent teaching strategy and the unity of courseware platform, build the network in the classroom, and move the classroom to the Internet. Teachers can read the network teaching at any time during class teaching, and can also upload the content or questions that have not been taught in class directly to the network class. Let students learn and communicate independently in their free time; Move the class library to the classroom and use multimedia technology to display the image; Moving the laboratory to the classroom and dynamically simulating the operation process of the subject experiment can make students feel immersive. Fifth, other functional modules. The system also has the camera function, teachers can use the camera real-time collection of classroom teaching information, while the system also provides classroom management, attendance management and question bank management and other functions, help teachers and students in the teaching guidance period to better complete the classroom teaching tasks. 2.2Real-time TransmissionThe function of instant transmission of the screen image of the current device is a more important function of consumer electronic devices, such as smart TVS, smart phones, set-top box devices, etc. Its core function is to transfer the screen image currently being displayed to the remote device for display, that is, screen sharing. Screen sharing is widely used in video conferencing, remote assistance, online services and other scenarios. To share the screen, we must first obtain the screen of the sharing device, and then encode, and then synthesize the audio and video into the stream format that needs to be transmitted, and finally select the appropriate transmission mode to send to the media terminal through the network, the media terminal is responsible for downloading and obtaining the media stream data from the network, decoding and playing, and presenting it on the screen device. The specific process is shown in Figure 3 below: 2.3Evaluation systemBased on the application evaluation of 3D teaching system from the multimedia perspective, it is necessary to ensure that users can log in to the network application server through the multimedia client and choose the multimedia practical teaching courses they need, and the server will select the corresponding teaching information from the teaching information database according to the user’s needs and feed it back to the client. The end user uses the fuzzy comprehensive evaluation model to evaluate the classroom teaching effect on the client side. The specific structure is shown in Figure 4 below: The whole system includes teaching evaluation, query statistics, system maintenance and other modules, and the performance of each module has cross-overlap and mutual cooperation, and finally forms a teaching evaluation system in line with the multimedia perspective. In the system operation process, students can use various functions to complete the ideological and political practice teaching evaluation, staff can use the system to achieve teaching management monitoring, teachers can log in the system to obtain students’ evaluation results. Before evaluating the effect of multimedia ideological and political teaching, the staff should log in to the system maintenance module to edit the information of teachers and students, and students can log in to the teaching module to evaluate the classroom teaching. After comprehensive analysis, the staff should log in the system to query the statistical sub-module to summarize the classified evaluation information, clearly describe the two percentage scores of the quality of multimedia ideological and political teaching, and finally print and store the evaluation results of each class’s students on multimedia ideological and political teaching. In the evaluation process, the system will use the fuzzy comprehensive evaluation model for analysis. This method can not only judge the level of target membership according to the principle of maximum membership, but also visually show students’ participation in multimedia ideological and political teaching, cognitive level and classroom teaching effect. 3.RESULT ANALYSISCombined with the topological structure analysis of system information management shown in Figure 5 below, it can be seen that in order to orderly realize the functional modules of the 3D teaching system, the system must have the following key technologies: First, open management. The multimedia elements in the system refer to the text, graphics, images, sound and other information contained in the courseware. Teachers can separate or combine any elements according to the teaching needs, so as to implement individualized teaching management; Secondly, resource integration. The use of modern technology to achieve simultaneous processing and integration of media materials, according to the management of content differences. Choosing different processing methods can not only effectively display for different platforms, but also distinguish management according to data differences; Finally, personalize the editor. This design is mainly to realize the characteristics of text editor, while realizing the intelligent management of multiple types of data, including retrieval data, student database data and test database data. 4.CONCLUSIONTo sum up, the 3D teaching system based on the multimedia perspective will follow the continuous development and effective improvement of modern educational technology, and basically realize the 3D teaching concept proposed in advance. It can integrate multimedia classrooms, network platforms and laboratories, and gain some benefits from both technical and theoretical levels. Since there are still many shortcomings in the current 3D teaching system, the future education field should continue to improve and innovate in combination with teaching practice, and finally fully demonstrate the application value of 3D teaching system based on multimedia technology. 5.ACKNOWLEDGMENTS
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