The purpose of this action research was to explore the types of interactions that foreign language learners experience while using a wiki as a supporting tool for a face-to-face research course. This design allowed me to play a dual role: first, I studied my own classroom setting and students. Second, I implemented a pedagogical intervention based on a collaborative online learning interaction. The data were gathered from participants' posts, and the findings revealed that class tasks promoted an asynchronous voluntary interaction among participants in which they shared knowledge and experiences while expressing the opinions and points of view that enabled them to actively participate in the face-to-face class.