Teachers' Lab The goal of the Teachers' Lab is to provide teachers and educators with a deeper understanding of commonly taught math and science concepts. Many of the Labs are based upon professional development workshops broadcast on the Annenberg Channel.
Which Famous Cathedral Collapsed?
Four of the grandest medieval cathedrals are shown -
one of which was not structurally sound and collapsed.
After looking at the photos try to select which cathedral
fell and see if you can determine, from the picture, why
it might have happened.