An activity is a general term for things a learner can do interactively in Moodle. Usually such interactions take place in a course - between learners or between the instructor and the learners.

You can find information about all the activities you can add to moodle at Jade University in the navigation bar on the left,

To edit your course room, switch on edit mode in the upper right corner of the course room.

1. click on “Add material or activity”, a dialog box will open.
2. Edit the settings offered as desired.
3. Save and to the course.