This study examines how team cognition and use of cognitive artifacts change during the course of an agile software development (ASD) iteration to better understand team member interactions. Four case studies of four different agile teams were conducted. Results demonstrate a team cognition change from planning, managing, developing, and concluding tasks in an iteration in preparation for delivering working functionality. We see the cognitive artifacts used throughout the iteration change. This supports ASD tenets of frequent, short, continuous communication and interaction on ASD teams. The contribution to project management and ASD is a clearer understanding of how and when team cognition changes and the cognitive artifact interaction changes during an iteration as ASD teams use artifacts to manage their project. The interactions that ensue with these artifacts move from individual to social interactions as the iteration progresses.