Many large introductory classes are taught in stadium-style classrooms, which makes group work more difficult due to the room layout and immobile seating. These classrooms may create challenges for an instructor who wants to monitor student engagement because the layouts make it difficult to interact with the students as they work. Student nonverbal actions, such as eyes on the paper or an unsettled gaze, can be used to determine when students are actively engaged during group work. While other methods have been implemented to determine student actions during a class period, in larger settings these protocols require time-consuming data collection and cannot give in-the-moment feedback. In this study, student verbal and nonverbal interactions were analyzed and compared to determine the types of nonverbal interactions students take when collaboratively engaging in group work during lectures. It was found that a larger variety of nonverbal interactions, such as gesturing and leaning, were used when students were collaboratively working within their groups. Instructors of large enrollment classrooms can use the results of this work to aid in their facilitation of group work within stadium-style classrooms.