Having grown up around, beside–and occasionally inside–televisions, I’ve seen my share of movies and commercials, many of which happen to deal with math. Whenever I catch the season’s hottest differentiating flick (“difs”), however, I have invariably found the following scenario played out: a slightly eccentric professor is standing in front of the class scrawling miles of equations… ON A CLEAR BOARD. A CLEAR BOARD! A CLEAR…ahhh, you get it. This is driving me crazy. No one has been able to provide a satisfactory response to the following questions:
- What is this clear material?
- What does one use to write on it? (e.g. dry-erase markers, grease pencil, mascara…)
- Why does it have to be clear? Are there any distinct advantages a transparent board has over a white board or the classic chalkboard?
- Is this board actually used outside of Hollywood? If so, why is it exclusive to science and mathematics instructors?
- …and… uh… what is the cost of this material, say, per sq. foot? Or panel. Whatever they sell these things by… (cubits?)
I’m losing weight. I can’t sleep at night. My friends and family say I’m starting to withdraw.