“Making the Most of Small Groups: Differentiation for All” by Debbie Diller is a paperback book published by Stenhouse Publishers in 2007. It is a textbook focused on education and psychology, specifically geared towards making the most of small group settings for differentiation. The book covers various subjects such as general education, elementary education, and social psychology, making it a valuable resource for educators looking to enhance their instructional strategies in small group settings. With 232 pages, this book provides practical insights and strategies for creating effective learning environments in small group settings.