This paper argues that an emerging framework for studying social episodes known as "positioning theory" is a rich tool for practical reasoning. After giving an outline of the Aristotelian conception of practical reason, recently developed by Alasdair MacIntyre, it is argued that positioning theory should be seen not as a detached, scientific theory, but rather as an important resource for learning to think and act in relation to practical and moral matters. I try to demonstrate a number of significant points of resemblance between MacIntyre's analysis of practical reason and Rom Harre's positioning theory. Following a pragmatist view of social theories, I suggest that positioning theory can be seen as explicating an understanding of social episodes that we need to acquire in order to learn to act as capable practical reasoners, but which quite often is left implicit in our everyday lives. Finally, I consider how positioning theory could be used to train the capacity for practical reasoning in moral education.