Posterous theme by Cory Watilo

X-Ray Challenge

2nd grade students have been learning that one of the first ways that scientists organize all the animals on Earth is into two categories: vertebrates and invertebrates.  Students have been investigating x-rays of vertebrates, looking for the vertebrae as well as other clues that could lead to the identity of the animal.  

Here are a sampling of some of the x-rays.

(download)