Old Google Tutorial

Select "Create Announcement"
Create a friendly announcement for your students and include a link, file, or YouTube video in your announcement.
You will be required to add website links, videos, and file attachments (or Google Drive docs) in each of your announcements, discussions, and assignments.
Suggestion: Write your announcement to include a link to a website or a YouTube - or attach a file or Google doc/slides presentation you want students to view.
Provide a description of the site or other addition.
Explain the purpose of visiting, downloading, or viewing your link or file to your students.
You can add several links or files to your announcement if you choose.
Post the announcement.
You may wish to include a request for student comments so that you can generate conversation with your students.

Adding Attachments