Wiki collaboration
A wiki is a collection of collaboratively authored web documents. Basically, a wiki page is a web page everyone in your class can create together, right in the browser, without needing to know HTML. A wiki starts with one front page. Each author can add other pages to the wiki by simply creating a link to a page that doesn't exist yet.
Note: When one participant is editing a wiki page, the others cannot edit that page at the same time.
Official Moodle document: Wiki
Video tutorial: Wiki: build knowledge together New 3 mins
Good practice
Wiki is a powerful tool for collaborative work.
The entire class can edit a document together, creating a class product, or each student can have their own wiki and work on it with you and their classmates.Wiki can be a great tool for brainstorming.Reference
The first page can start with a topic idea, followed by a list of ideas. Each idea can link to a new page of details, which can include images and URLs.
https://it.umn.edu/wiki
https://docs.moodle.org/27/en/Wiki_module