We have Screencastify deployed to all our PCs at WPS. One of the many uses of this screencasting tool is to give student spoken feedback on their work - alongside the normal written stuff. Open the students work up (from Teacher Dashboard), click the Screencastify icon, click record, talk through the work, change the video name and upload to drive. Share with the student. It's a very quick way of giving lots of detailed feedback. Brief demo ....