9a4d552c_ion_Online_Tutoring___UBC_Wiki__Strategies
[Reality] Sometimes a challenge to know when a student is “getting it” – because you may not be able to see them. [Strategies] 
Check for understanding by: offering a few examples to work on – sharing worked through examples and ask students to explain the steps and why they work. Develop your skills at summarizing (ie. acknowledging the variety of contributions,refocusing discussion, and reinforcing important ideas) weaving (ie. using varied examples to illustrate a point, providing additional info. correcting common errors) and providing feedback to assist in understanding.
Documentation:Online Tutoring - UBC Wiki
Strategies