The difference between the lecture materials 'File' and 'Folder' modules is as follows:

File

• You can upload only one file.
• It can be set to check with a pop-up window (document viewer) in the course, and you can set whether to allow download or not.
• You can check the number of times the student has viewed the file by the "Learning History."

Folder

• You can upload multiple files.
• You can check them through downloading the files in the folder.
• You can't know what file the student has viewed because you can only check the number of times a student has viewed the folder module by the "Learning History".