"I loved doing this experiment because it was fun.  It teaches about erosion.  We took 3 candies.  First we put one into a glass that was empty.  Then we put one in calm water.  The last one we put in water that we shook up.  After an hour the candy was all gone in the one we shook up.  The one in still water had a little bit of candy in it.  The last one was the same.  The candies faded away like rocks do when erosion happens."