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.
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 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 Add Folder link.