I've been following with interest over the years requests for a group or “team” assignment option in Moodle. When Moodle 2.4 comes out in December you will finally be able to get this option. I made a short and very basic screencast about it below.
This book presents a range of techniques that self-motivated learners can use to connect with each other and develop stronger communities and collaborations. The book is addressed to everyone who is interested in how learning works, whether you’re an educator, a hobbyist, an artist, a home-school student, an employee, a parent, an activist, an archivist, a mathematician, or a tennis player. The book was written by a bunch of people who think learning is cool.