Behaviorism: Quick feedback or reinforcement can be facilitated through mobile devices. Constructivism: Mobile devices enable immersive experiences such as those provided by simulations or games. Situated learning: Learners can take mobile devices into authentic learning environments or "context-aware" environments, such as specially equipped museums. Collaborative learning: Mobile devices provide a handy additional means of communication and a portable means of electronic information gathering and sharing. Informal/lifelong learning: Mobile devices accompany users in their everyday experiences and become a convenient source of information or means of communication that assists with learning. Support/coordination: Mobile devices provide just-in-time access to learning resources, news, information, planners, address books, calculators, and so forth.