This document provides information on working with groups and managing group work in large classes. It discusses the benefits of group work, including producing better presentations and reports by combining group members' talents. Effective group work requires addressing aims and objectives, roles and tasks, conflict, criticism, and responsibilities. For large classes, teachers can have students work in smaller groups of 5-7 and establish rules to control noise and ensure English is used. Monitoring groups, providing feedback, and training students to lead and help each other can help manage effective group work in large classes.