Virtual classroom lessons should be more about learners working together collaboratively than lecture and PowerPoint. Intellectually, we all recognize that. But, what purpose does collaboration truly serve and what virtual classroom tools achieve the desired result?
Why do you suppose we bring people together to learn?
Is it merely to allow a Facilitator the opportunity to lecture to a multitude of people simultaneously? Or is it perhaps to provide opportunities for deeper learning through collaboration? (Two or more people practicing new skills and applying new knowledge.)