Abstract
This paper reports on a study that investigated the pedagogical practices and beliefs of preservice
and beginning teachers in integrating technology into the teaching of secondary
school mathematics. A case study documents how one teacher's modes of working with
technology changed over time and across different school contexts, and identifies
relationships between a range of personal and contextual factors that influenced the
development of his identity as a teacher. This analysis views teachers' learning as increasing
participation in sociocultural practices.