This article explores pedagogic practices, in particular, material artefacts, which support participation and structure the interaction of international students in seminar discussions. Using both a fine-grained analysis of the artefact in interaction as well as student perspectives on its affordances, the findings reveal how material artefacts in the form of worksheets and reading guides can provide international students with linguistic resources, content, and familiarity of routines and participation structures. This article concludes that pedagogic practices are crucial to increasing interaction and participation of international students in seminar settings.