A person sitting and raising her hand in a circular icon.

Icon of Person Raising Hand

Person with a raised hand explaining, teaching, presenting, discussing, waving.

Person With A Lifted Hand

Person sitting on a chair, watching a screen monitor.

A person sitting down, with his computer and headphones, participating in an online class, watching a movie or listening to music.

A microscope seen from the side with a eyepiece and a slide. 

A round bubble with a teacher or presenter inside, giving a class and pointing a board.

A busy and overworked manager or employee surrounded by charts, graphs, and notifications.