Clear expectations set the tone for communication and interaction between you and the students. The more specific your expectations are, the better students can show that they have mastered the topic or reached learning goal. It's like on Googlemaps: Once you know the destination, you can search for a route to get there.
For every assignment and any moment that you interact with students, e.g. when you plan discussion sessions or online synchronous information exchange.
MIDI: These tips are also suitable for current teaching situations, but require a little more preparation.
Communicate: