[ Thanks to Ramsai
for this link. ]
“Quite often you might set your students a task to go on to your
Moodle course and read a resource that you have uploaded or follow
a link to another website. While you can’t know for sure that they
have read the material, it is possible to check that they have
displayed it on their screen.
“To check if users had viewed a resource, we have completion
tracking. To use this feature, your administrator must enable it
for your whole site and you need to turn it on in the student
progress section of the course settings.
“This means that now you can easily see a list of users who have
looked at the resource.”