Your Edmodo Backpack is like a virtual flash drive that works similarly to the Teacher Library. As a student, you can store an unlimited amount of files/links here and link your Google Drive to your Backpack. You can attach items from your Backpack to Posts or Assignments. There is a 100 MB per upload limit, but the overall storage available is unlimited.
Note: Students will not see files from the teacher's Library or the teacher's shared Folders in the Backpack. Students can view folders that have been shared with the Class in the "Folders" tab on the Class home page.