This document defines mobile learning as learning that occurs anywhere and anytime using mobile technologies. It lists the objectives of mobile learning in distance education as being available anywhere and anytime, allowing two-way and multimedia learning, enhancing knowledge without time constraints, and making learning more independent and adaptable to individual needs. The document also discusses features of mobile learning like knowledge building in different contexts and convenient access. It notes advantages like low cost and continuous learning support, as well as challenges involving connectivity, screen size, bandwidth, and reworking existing e-learning materials. Case studies from Carnegie Mellon University and Korean universities demonstrate uses of mobile learning.