This article takes as its point of departure an action research project conducted in an upper secondary school in Sweden. The project had a practitioner research approach and was carried out with students in one class. In this article, I elaborate on the tensions that appeared during the project concerning collaboration and action. This is done by revisiting the project with a theoretical approach of sociomaterialism. Revisiting entails critically and creatively exploring how to comprehend collaboration and action differently. It raises question about who or what are involved in the collaborations and what are to be considered 'good' actions. Within the elaboration, collaboration and action become intertwined phenomena that are always working together. Furthermore, it proposes how the notion of intervention embraces the distributed and collective disposition of both collaboration and action. By addressing the notions of collaboration and action with a sociomaterial approach changing a teaching practice becomes a relational experiment without preset goals. The potential for change becomes within speculative interventions that affords various encounters and relations.