sentences:  In addition to uploading lecture content, instructors are also able to upload files which would be distributed as handouts in a traditional classroom setting.Students who log onto the course home page can view the course content online or download the materials provided by the instructor, as well as submit assignments posted by the instructor by uploading files from their computers.Instructors can view all student submissions online and grade the assignments through the web interface, making the graded work available to the student immediately.