Dashboard:
Article Viewer with authorship highlighting

The Article Viewer tool — —
shows the current version of the article. Once authorship data has
loaded, it also overlays details about which text was introduced by which
student. The Article Viewer is available on the Articles tab for each
of the mainspace articles edited by your students, as well as in the
Assignments & Exercises view of the Students tab, for assigned articles.
This is your best way to identify your students' contributions in existing
articles — and to see who did what for a single article edited by a group
of students.
Note that authorship highlighting works well for most article content, but may not include images, templates, and footnotes that your students added.