Moodle 2.5 Wiki beginner tutorial. Moodle wikis are collections of collaboratively authored web pages, beginning with a home page that students can edit, and to which they can link more pages. You can create wikis at course, group and individual level.
Moodle Wikis are particularly useful as part of a group work activity. They are places where students can present the fruits of their research, or the drafts of their group reports, for comment and input from the other members of the group. The reporting features enable instructors to more fairly assess the individual input of team members, and to view the project within the course site.