Group learning has been embraced by many middle school teachers as a critical component of teaching and learning about science. Teachers have developed techniques to facilitate group learning, but sometimes wish for a better method to keep students on task, allow the teacher to track the progress of individual groups, and promote higher-level thinking and discussion. In this article, the authors discuss the importance of using "whiteboards" as a powerful tool for facilitating discussion within groups of students. When the groups are working on their whiteboards, the teacher's role is to act as facilitator by asking questions, probing for more detail if it is needed, and encouraging creative, novel ideas. Teachers should be careful not to get stuck helping one group, as it is important to be available for brief exchanges with all of the groups. As teachers circulate and observe students' responses, they should feel free to stop the entire class and provide more guidance or structure as needed. The authors have found that by using whiteboards, students' discussions are more animated, on topic, and demonstrate higher-level thinking. (Contains 2 online resources.)