This study explores the integration of two key ideas and working frameworks: a community of educational practice formed by the synergy between a natural history museum and a university department of pre-school education, which undertook participatory action research aimed at the creation of innovative museum programmes for young children. Data analysis and the evaluation of the research process show that the community was able to bring its situated knowledge into question and interrogate propositional knowledge by means of re-evaluating the learning targets, the nature of children's activity, the nature of interaction between adults and learners, and the nature of resources used in existing and newly designed programmes offered to young children. Participatory action research enabled the community to monitor the implementation of theory with scientific rigour and formulate a new "knowledge strategy", which in theoretical terms will guide future developments. (Contains 6 tables.)