anthony, Worksheets are great. Also, a list for topics for small group discussion often works. A lot of instructors will just show a video or DVD. Although that can fill the time, unless it's directly related to the subject matter, it's really a waste of time. Reviewing past material, outlining chapters, presenting to the class, or moving to a activity like a lab or demonstration are better activities than a video. Even sharing work-related stories of past (good and bad) experiences can be effective because it relates to the subject, is easy to implemment, can be instituted on short notice, and keeps the students interested and focused. Barry Westling