1. The document discusses three topics: computer-based education technology, virtual reality simulation games, and teleconferences. 2. Computer-based education technology uses computers and related technologies to enhance learning through interactive software, online platforms, and educational apps. It provides personalized and accessible education. 3. Virtual reality simulation games immerse players in realistic virtual worlds using head tracking and spatial audio. They aim to create a sense of presence across genres like action, adventure, and simulation. 4. Teleconferences allow geographically dispersed participants to communicate using audio, video, screen sharing, and document sharing technologies for business and education purposes.