In CLT group work, a group should have:

1. Group work is a collaborative activity for communication. 2. Students are assigned a group of no more than six people. 3. Each takes a role and a designated amount of time. 4. So groups are small, not ten or the entire class. **Why not the others:** Ten members or the entire class together is too large, and exactly two members is a pair, not a group. _Source: Wikipedia, "Communicative language teaching", section "Group work" (revision 1376684349)_