A Cartesian conception of material space views each part as external to every other part: "partes extra partes." Because two material things cannot occupy the same space, each of it exists in itself, separated by a boundary from everything else, including other things. This ontology is the origin of thinking the world in terms of…

There is a well-established area of work in mathematics education focusing on mathematics for social justice. Much of the work, however, is concerned with "individual" students' understanding the world symbolically -- as evident in the notions of reading and writing the world using mathematics -- while failing to address a transformative…

Cultural-Historical Activity Theory (CHAT), which had been termed the best-held secret of education about 15 years ago, has had an exponential growth over the past three decades. Because it thematizes largely the structural aspects of activity systems, the theory only recently has been developed to include emotional, motivational, and…

In cultural historical activity theory, the entities that make a system are not conceived as independent but as aspects of mediated relations. Consequently, an individual, a tool, or a community cannot be theorized in an independent manner but must be understood in terms of the historically changing, mediated relations in which they are integral…

Develops the analytical framework in which inscription (i.e., grades) and actor network are the central points. Exemplifies this framework in a case study of grades and grading practices. Shows how the framework can be used to provide constructive poststructuralist analyses and how the efforts of critical and liberation pedagogies are undercut by…