Resources are documents you make available to a whole classroom: a textbook chapter, a formula sheet, a set of past papers.
Adding a resource
Open the classroom from the sidebar and go to the Resources tab. Upload your files.
Students in that classroom can view them from their own Resources tab.
This is not the same as a tutor knowledge base. Resources are for students to read; a knowledge base is what an AI tutor answers from. See Using the Knowledge base.

