How does a researcher investigate phenomena that continually emerge through, with and as various practices? This paper explores this question, drawing on transformative reflections on the unfolding process of an empirical research project investigating professional practice in Dutch early childhood education. The project initially applied an open,…

This article presents the findings from a teacher intervention in Dutch kindergartens aimed at improving teachers' differentiation practices (DP) to better anticipate student differences. The intervention was designed to improve the match between student levels and curricular activities, in particular for high-ability students and consists of…

This paper reports on the findings in the first phase of a design-based research project as part of a large-scale intervention study in Dutch kindergartens. The project aims at enhancing differentiated instruction and evaluating its effects on children's development, in particular high-ability children. This study investigates relevant…