In the following screenshot, the student is viewing the Groups page. Note that there are two groups displayed—Field Trip to Aquarium and Sandwalkers.
The instructor made a student a member of Sandwalkers. This student has the option to enroll herself in the Field Trip group as well.
Every group automatically gets its own course tools; for example, the Sandwalkers group has its own blog:
In some cases, group activities are visible to everyone in the course. In other cases, group activities are visible only to members of the specified group. You ...