Are you sure? When I went to college, the whiteboard was a supplement to the lecture, so either/or would not have worked. What if they are hard of sight and ca

Are you sure? When I went to college, the whiteboard was a supplement to the lecture, so either/or would not have worked. What if they are hard of sight and can't read the whiteboard or blackboard, even if they might be able to read a captioned video? Lord knows I remember barely being able to read some professors handwriting, even in person, or being able to understand what the hell a professor was saying in person. How many people are there that can efficiently caption complex mathematical equations?