You must have access to a toilet with water that spins as it drains when the toilet is flushed.  Flush the toilet and make a note of whether the water spins clockwise or counterclockwise.  Then either email me the result or write down the result on a piece of paper and turn it in on Wednesday (be sure to include your name).

Many of the toilets on campus won't work.  The water doesn't spin, there is just a violent whoosh as the water is forced down the drain.