Creating extra credit assignments is something many teachers choose to do giving the students a chance to earn a few extra points at the end of the semester. In Moodle, adding an extra credit assignment is actually quite simple and can be added to any graded item such as a quiz, an assignment, a forum, etc.
To add an extra credit assignment:
1. Create a graded activity
2. Go to the Moodle Gradebook
3. In the upper left-hand corner in the box indicated in the screenshot below, click the drop-down arrow and select Full view in the Categories and Items section.
4. Now simply click the extra-credit checkbox next to whichever assignment you would like to count for extra-credit. Moodle adds the points to the grading scheme, but does not add them to the total points possible.
5. Finally, click Save Changes at the bottom of the screen.
Note: You can only create extra credit assignments if you are aggregating your grades using “Sum of grades,” or “Simple weighted mean of grades.”