Happy Valentine's Day

Today I received the following email from my French professor:

      I have been correcting your essays and I am appalled at the quality of 
      the work you gave me.  Many of you did not use a spell-check; many of 
      you did not check verbs, agreements, nouns, gender etc. We will discuss 
      this in class but I wanted to inform you in advance.  I know that you can 
     do much better.   

Nothing says Happy Valentine's Day quite like that.

A Chalkboard's Life Story

Have you ever thought about how much information a chalkboard or whiteboard shows?  Once we fill it up, we erase it and start over, but how many millions of lectures and discussions has a single chalkboard been a part of? If you could somehow quantify the amount of information that has ever been displayed on one whiteboard in one classroom, it could fill volumes, if not libraries.  It's kind of mind-blowing.