academic
asia
asian
black board
blackboard
broadcast
calculus
chinese
class
classroom
college
covid19
distance teaching
education
elearning
engineering
equation
explain
explaining
formula
headset
internet
japanese
laptop
lecturer
lesson
live
male
man
math
mathematics
mature
method
notebook
online
pan asian
people
pointing
professor
remote
school
senior
solving
teacher
teaching
university
video
webcam
定額
Asian senior male calculus professor wearing headset is ponting on board while having blackboard lecture online through laptop in the classroom at collegeの素材 [FY310164037926]
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