This article reports on the findings of a PhD research project into the improvisatory nature of teacher expertise. The data are taken from a series of comparative case studies of seven experienced teachers working in secondary schools in the South West of England and who have been identified as being expert within their school setting. Constant…

International comparisons in science (and mathematics) education show the relevance of teaching quality for learning outcomes. Teacher professional development (TPD) is hence considered particularly relevant for improving teaching and learning in science. The study at hand is part of a European network initiative named Mind the Gap that explores…