Publisher Summary This chapter describes techniques for communicating with students. Three types of graphic communication are used in intelligent tutors that include pedagogical agents, synthetic humans, and virtual reality. Synthetic humans are pedagogical AI agents rendered as realistic human characters. Humans already know how to engage in face-to-face conversation with people so synthetic humans enable them to communicate naturally without training. Natural language processing, 3D scenario simulation, emotion simulation, behavior modeling, and composite facial expression are often included in the implementation of synthetic humans. The virtual reality(VR) immerses students in a graphic environment that includes the pedagogical agent. When a virtual persona, or pedagogical graphic person, inhabits a teaching VR system along with the student, it enables collaboration and communication in ways that are impossible with traditional disembodied tutors. Virtual training materials typically incorporate simulated devices that respond to student actions using head or hand mounted tools. The potential of VR for supporting K-12 education is widely recognized. More than 40 pilot VR applications have been launched in grade schools, high schools, and colleges. One of the unique capabilities for this audience is to support visualization of abstract concepts, observation at atomic or planetary scales, and interaction with events that are otherwise unavailable because of issues of distance, time, or safety.