Okay, there not related (at least not as far as I know, well after reading what I wrote, I’m sure they are) but they are two topics that my daughters not too fond of.
After reading the first one, it makes me wish my daughter had Vi Hart for a teacher as it looks like she makes math really fun. The article is “Bending and Stretching Classroom Lessons to Make Math Inspire” by Kenneth Chang at the New York Times.
This second article, after the recent spat of sinkholes (i.e. in Florida and closer to home, Illinois) is actually an article and video of a man made pond that suddenly became a sinkhole. The article is entitled “Sinkhole swallows pond (video). How does that happen?” by David Clark Scott at the Christian Science Monitor.