3D virtual environments can be used in the classroom to provide an immersive educational experience for students. They are computer-based environments created using 3D models and textures where users are represented by avatars. Students are already familiar with virtual worlds from games like Runescape and Second Life. In a classroom, 3D environments allow students to collaborate remotely, build virtual learning resources, demonstrate processes, and tell interactive stories. Teachers have options like hosting their own virtual world using OpenSim, using the Teen Grid in Second Life, or running the Edusim platform directly on an interactive whiteboard.