A male professor is writing on a whiteboard while speaking a foreign language.
A student films his teacher writing on the whiteboard during class.
A man is writing in small lettering on a whiteboard.
Teacher writing out instructions for how to perform an action for something imposed on a wall.
a person writes on a dry eraser board as a projector puts an image on it
An image is projected onto a a whiteboard while n stands on the other side of the image writing with a marker before hecappedt marker and back away.
Instructor writing something on a white board and then talking about it.
A man wearing glasses is shown writing something on the white board.
a teacher is writing something on a whiteboard and then says something
A teacher is writing something on a very large grease board.