Mobile learning has emerged from the recent proliferation of mobile technologies such as mobile phones, hand-held computer devices and the increased availability of wireless networks. Unarguably, mobile learning will present new opportunities to enhance the learning experience, both in terms of flexibility of place and time, and the quality and variety of available learning activities. However, these new opportunities can only be fully realised in the light of well-informed practice. Towards this end, this paper proposes a learning-centric definition of m-learning and presents a related model. In so doing, the paper highlights some key considerations of importance in the design and development of m-learning spaces. A key theme underlying the paper is that effective m-learning contexts will be characterised by changes in practice, integration of mobile devices into the curriculum and the achievement of meaningful learning outcomes.