Additional visual materials can be mailed, faxed to students. Text can be sent via computer. Attendance should be taken during the audio conference and the instructor should require students to interact as part of their grade. Classes should be taped and made available to students. Use an agenda with paragraphs explaining discussion points.
Handouts are important for visual learners.
Throughout the class, use visuals. Involve students early in the audio conference to make them comfortable with the medium. Get participants talking within the first few minutes by asking for names and locations. To create pace, alternate short presentations with discussion, visuals, or a work sheet. Keep segments shorter than ten minutes.