This document discusses various collaborative activities and tools that can be used to build classroom community and encourage active learning. It recommends getting to know students' names, welcoming questions, and using group activities. Specific collaborative techniques described include think-pair-share, group projects, case-based learning, jigsaw activities, and checklist for creating collaborative activities. Web-based collaboration tools like Google Docs, Stixy and Popplet are also mentioned. The overall message is that collaborative learning allows students to take responsibility for learning together and has benefits for motivation, critical thinking, and knowledge development.