Case-study : A Team Centred on Languages This paper will present research undertaken within the framework of the ReVEA (Ressources vivantes pour  l’enseignement et l’apprentissage) (Live resources for teaching and learning) project. The analysis focuses on part of the data collected in order to study the activity of a team dedicated to the teaching of languages. The references brought to bear on the data concern among others the theory of communities of practice : how can the relationships between individual and collective activities concerning teaching resources be described ? What differences emerge among individual activities given the types of participation in collective activities displayed ? The analysis, which uses the notions of “peripheral legitimacy” and “full member participation”, has enabled light to be shone on the links between the reification of team resources and the process of selection of resources reached individually.