First of all, modern educational technology is based on modern educational theory. Modern educational technology is an educational technology based on modern educational thoughts, theories and methods, guided by system theory and based on modern information technology. It aims at optimizing teaching process, teaching resources, teaching effect and teaching benefit, and is a comprehensive embodiment of modern teaching design, modern teaching media and modern media teaching methods. Educational technology is a variety of materialized means used in the educational process. Compared with traditional education, modern education pays more attention to topics related to modern science and technology. Specifically, it focuses on the latest information, transmission, processing means and cognitive tools, such as advanced electroacoustic, television, computer systems and their teaching software, and the development and utilization of these systems can not be separated from the guidance of modern scientific methods-information theory, cybernetics and system theory.
Second, modern educational technology is based on semantic network theory. According to the semantic network theory, human cognition is a layer-by-layer network structure, which includes nodes and chains. Nodes form a memory network through the action of chains. The teaching structure of modern educational technology starts from the initial knowledge node and forms a multi-level knowledge structure in a network knowledge chain structure. This is a kind of learning environment that organizes teaching information in the way of human thinking, and students can arrange their own learning environment according to their actual ability and learning needs. However, the linearization of traditional teaching knowledge structure not only limits the acquisition of multi-level and multi-angle knowledge information, but also limits the completion of learning only according to the teacher's teaching plan.
Thirdly, modern educational technology is based on cognitive learning theory. Cognitive learning theory reveals the gradual development process of human mastering knowledge and forming ability, that is, the traditional teaching process of vocational and technical education, especially the theoretical teaching part, is connected in series by perceiving teaching materials, understanding teaching materials and consolidating applied knowledge, which takes a long time and is easy to dilute students' memory, which is not conducive to the formation of the gradual development process. Modern educational technology integrates perception, understanding, consolidation and application, which strengthens students' memory in a short time and can effectively promote individuals to actively participate in the progressive learning process of continuous reorganization of cognitive structure.