Activity completion
From MoodleDocs
Activity completion allows the teacher to set completion criteria in a specific activity's settings. A check (tick) appears against the activity when the student meets this criterion. The criterion might be viewing, receiving a certain score or a student marking it as complete.
Site administration > Advanced features > Completion tracking must be enabled on the site.
- Note: If Completion tracking has been enabled, the teacher will see the Activity completion group in their course settings. However, it is possible to track activity completion without using the Course completion feature. It is also possible to use this feature with the Conditional activities feature. These 3 features can be used separately or in various combinations in an activity.