To establish eye contact with remote participants, you must look into the camera. As in a conventional classroom, such techniques can eliminate monotony and can be very effective in emphasizing important information. Envision the camera as one of the students sitting in front of you. As you scan the group during your presentation, an occasional glance at the camera will emphasize your acknowledgment of the distance students. Look at the camera when giving directions or responding to distance participants.
Eye contact is important in encouraging participant involvement.
Don't forget to teach to your on-site students as well. Vary your focus from the camera to the classroom so that no one is left out. For long live presentations, consider showing something visual every now and then that says something about you on a personal note or invites short conversation off the topic. This will break up the information and give you an opportunity to add some of your personality to your presentation. Remember that people prefer to receive information in different ways.