This is well written spoken. I like the idea that you share regarding revisiting ideas or reinforcing new ideas as one of the affordances of this tool. I also like how you talk about the use of these tools for collaboration. I don't think it is always easy to have student collocate with a tool that is not necessarily designed for this, but the design comes from the teachers' vision and creativity. Finally, I like how you use resources and citations from the readings to support your ideas and critiques. Great job.