During the fourth semester, I was first introduced to the concept of ephemeral art. If you're unfamiliar with the term, it basically means art that is designed to be temporary. It covers a broad range of types, everything from ice carving to face painting to sand castles to fire sculptures that burn up as they are displayed.
I was reminded of my general amazement with the genre this morning when I found Rosi drawing in the condensation on the back window.
Being the amazing educational facilitator I (occasionally) am, I immediately turned her play into an art lesson. As part of our study, we looked at collections of ephemeral art online. Some of my favorites were by Richard Shilling and Andy Goldsworthy, who do something called "land art" or working outdoors with primarily natural materials which then may erode or decay naturally. Be sure to check out the links; both of these guys do some really incredible stuff!