Hi Mary,
So the way I am doing the presentation, there are questions posed to the learners during the course. I didn't want to make them minimize the presentation to answer the discussion question. Think of a face-to-face course where the trainer asks a question then the people discuss it. That is the feel I was going for, but keeping it all within the presentation itself. I don't know if there is any particular advantage, of Articulate over the Moodle Activities, but since the presentation is done with PowerPoint/Articulate, and I want the interaction from the learners, I thought this would be a good way to get them involved in a discussion while in the course.