Here'a a tutorial that allows you to make striking silhouettes using Picnik's online free photo-editing service. The best part is, no log-in or downloads required, so it's a perfect project for elementary students or anyone, actually. Enjoy!
If you use my tutorial to make silhouettes, I would love for you to join and contribute to the new Flickr group I created.
Meanwhile, you can see the other samples I've created here: picasaweb.google.com/magrelacanela/Silhouettes02?feat=directlink
Also, feel free to download a copy of this tutorial, especially if you don't have access to Vimeo at school. Click on the link, and it will tell you how. (No log-in required there, either.)
Creative Commons music downloaded free from ccMixter - "Another Girl" by duckett.