This document discusses collaboration in online classrooms and building online communities. It notes that collaboration promotes deeper learning, critical thinking, and co-creation of knowledge. For collaboration to occur, a sense of community must exist where students can share ideas. Key elements of an online community include shared purpose, information sharing, guidelines, and technology to facilitate interaction and reflection. The document provides tips for instructors to set the stage for successful collaboration, such as using learning contracts, clearly defining assignments, modeling and guiding the collaborative process, and evaluating outcomes.