This study compared student performances in role-playing activities in both a face-to-face (FTF) environment and a virtual 3D environment, Second Life (SL). We found that students produced a similar amount of communication in the two environments, but the communication styles were different. In SL role-playing activities, students took more conversational turns, but have shorter exchanges compared to the FTF environment. Students generated an equal amount of topic-related concepts in the two environments. They also reported role-playing activities in SL as more interesting and less formal. The educational implications for this study are discussed.