learning about river basins in a geography lesson, using Second Life (part 2)

as a follow-on from my previous post, here's a teachable moment, illustrating how Second Life can be used to surface otherwise implicit pre-conceptions and mis-conceptions about concepts in geography.

have a close look at the drainage basin below, terraformed by a group of four 14- to 15-year-old students in Singapore, over the span of half-an-hour.

here's a map representing the entire class's work (over the same period of time), as a basis for comparison :-)