Why?
The chat box allows students to type, save chat history and allows them practicing their typing skills which they will need for work in the future. Usually people type slower than they can type so try to be patient.
why?
It's free and allows groups of students to collaborate on a single document. You'll be able to see changes they have made in real time. Google docs is an excellent way to allow groups of students to type at the same time.
How?
Google docs allows students to see suggestions/edits which you have made so that they can improve their writing
Why?
It builds rapport with the learner and they feel that their feedback is personal (just like in a face to face class).
Oral feedback can be given using free websites such as screencast-o-matic. It allows you to record your voice while sharing your screen.
Watch a demo lesson on below showing how I use google docs giving feedback on writing