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…

I present theory and research associated with learning to teach science in inner city high schools on the east coast of the United States. I use theories from cultural sociology as a framework to explore how coteaching is enacted in a science teacher education program in which coteachers collaborate with high school students in cogenerative…