To keep folders and order, please zip up folders and add zip files whenever possible. Your uploads will go in their own folder, but specifying anything to help identify teacher, grade, and activity is a great help.
Uploads are one-way. You will not be able to see your file uploads. You can delete your uploads only while your session is active.
To organize uploads into folders:
Type a folder name into "Upload folder name".
Drag and drop one or more files (even folders for Chrome users) or click "Add files...".
Click "Start Upload".
Repeat Step 1 with a new name in the "Upload Folder" box (even before the last upload is finished).