AcademicEarth is dedicated to breaking down the barriers to a "world class education.'' College-level video classes and supplemental materials are available from universities such as Berkeley, Columbia, Harvard, and Yale. They are listed by subject, university, or instructor, and are also available as Playlists, themetic collections of lectures picked by the AcademicEarth editors.
Check this out. Could you do something like this for your class? How could a video like this make more of an impact for your parents, for your students?