If an instructor allows observers to edit course pages, you can edit a page in a course.
Pages is designed to open to the front page for the course, if there is a front page selected. To select a page from the Pages Index, click the View All Pages button.
Click the Edit button.
Note: You will only see the Edit button if you are allowed to edit the page.
To format text and embed external links, YouTube Videos, and Flickr images, use the Rich Content Editor . To gain access to all publicly available Files and Images from course Files, click the Content Selector  in the Sidebar. You can also quickly link to existing pages and past Discussions. When you are finished editing the page, click the Save button . Canvas saves a new version of the page each time a user saves, so no changes will ever be lost.