I like to tie together teaching and art. I like to speak of The art of teaching because an art has no absolute rules. Art is always changing.
To think about the language in online teaching we must remember teaching is an art.
No rules for the right use of language in teaching, because:
Students are from different cultures and teachers are from different cultural origins. Language style and language register are different between students and between teachers.
So no universal rules for language and communication in online courses.
Humor, jokes and the unexpected could help to make a course attractive. Layout and pictures, sounds could help too.
You need to know your audience.
Ask for feedback.
Do reflect on your teaching.
And remember, the contact is the connection from student to the course and from teacher to the course (and to each other). For contact and connection in a course two parties are required.
image: Marcia Beckett