Visuals should be specifically designed to make the best use of the technology being used. The instruction must be personalized. Clearly define roles and responsibilities for the site facilitator. A site facilitator is usually used when conducting a DE course by oneway or twoway video. The site facilitator, if qualified, may even teach the course in the event of a system failure.
Small groups can work together to solve problems, play games, do roleplaying exercises, and so on.
If your school has twoway video capabilities, students at different sites can work together. Schools with Internet and email access can use chat rooms or listservs. Instructional games are used for review, summary, and practice. It is also best to use traditional games, such as bingo, Jeopardy, and Concentration, as the framework for your games. You won't have to spend time teaching students how to play if they are already familiar with the game concept.