In this new video I demonstrate how to use Google Drive to comment on PDFs, images, and videos.
Applications for Education
One of the ways that I've used this Google Drive feature in the past is to help my history students read through primary source materials. I would take a scanned copy of source that was available as a PDF, upload it to Google Drive, and then share it with my students. My students could then use the commenting feature to ask me clarifying questions about the document and I could use the commenting feature to highlight parts of the document to which I wanted to draw their attention.