Second-generation cultural-historical activity theory, which drew its inspiration from Leont'ev's work, constituted an advance over Vygotsky's first-generation theory by explicitly articulating the dialectical relation between individual and collective. As part of an effort to develop third-generation-historical activity theory, I propose in this…

Used the experiences of three preservice teachers and the experiences of the researchers to characterize the gap between theory and prescriptions for teaching and every day practice. Illustrates how P. Bourdieu's notion of "habitus," a set of dispositions, accounts for appropriate actions in situations where there is no time for…

Examines the relationships between the development of proportional reasoning strategies and three cognitive variables from Pascual-Leone's and Case's neo-Piagetian theories: (1) degree of field independence; (2) M-space; and (3) short-term storage space. Describes the ability of students to transfer problem-solving schemata to new contexts as well…