Abstract
With the continuous development of computer technology and the popularity of network technology, virtual reality technology has also been rapidly developed. As an important branch of virtual reality technology, the simulation experiment is gradually applied in various fields according to its excellent three-dimensional expression and interaction characteristics, and has become an important part of computer assisted instruction arousing widespread concern. The cognitive learning theory, media theory and constructivist learning theory are taken as the guidance to establish a set of simulation system about organic chemistry micro teaching, so that students can get rid of the limitation of time and space to explore the microscopic world movement law. The simulation experiment of the bromine electrophilic addition reaction mechanism is developed by using the virtual reality technology based on X3D standard development, simulating the whole process of the reaction mechanism. Through the development of the simulation experiment, the general modeling method and development process based on of X3D standard are mainly described, and the interactive mechanism and interaction of X3D standard are analyzed. With the further improvement of network bandwidth, the simulation experiment based on X3D standard not only simulates the abstract concepts and principal in teaching field by using its unique encoding and the interaction mechanism, but also can transmit conveniently on the internet. The virtual simulation technology based on Web becomes the future development direction. With the rapidly development and popularization of virtual reality technology, it will bring profound and extensive influence to the society and education field.
