How do I add a new file or folder to a course in the Teacher app on my iOS device?
In Canvas Teacher, you can add a new file or folder to your Course Files.
The images in this lesson are shown for a phone display, but unless otherwise noted, tablet displays mirror the same steps.
Tap the name of the course you'd like to view.
Tap the Files link.
View your course files. To add a file or folder, tap the Add button.
To add a new file, tap the Add File link.
Select File Location
Select the location of your file. You can record audio , take a new photo from your camera , upload a file , or find a file in your library 
Note: To learn more about media uploads, view the Canvas Media Comparison PDF.
To add a new folder, tap the Create Folder link.
Enter the name of your folder , then tap the OK button .
View the items you added to your Course Files.