Variatio Est Mater Studiorum

There is no learning without discernment. And there is no discernment without variation. If good teaching is about making learning possible, how do good teachers help students experience variation? In this paper, we argue that they constitute a space of learning which contains those aspects of the object of learning that are subject to variation simultaneously. For learning to occur, whether it be in the formal learning contexts established by these teachers, or in the less formal contexts of participation in social practices, there must necessarily be a certain pattern of variation present to experience, and this pattern must be experienced.