I use the projector in a bunch of different ways: morning instructions, note templates, correcting classwork and taking tests, presenting artists and art techniques during lessons, display templates on the whiteboard and complete them as a class. I'll put a bunch of this stuff on the O: drive. - Dan Spitler

Our class uses Google Earth as an interactive map. It's way better than those awkward pull down maps. Google Maps is another good resource. - Joel Zehring

Bubbl.us is good site for taking notes and brainstorming with a computer projector. You can save your work online, print your work, or create images to put on your class blog or wiki. Gliffy is another solid brainstorming tool. - Joel Zehring

I developed this research lesson for a class last semester. It was designed for sophomores but the basic idea could be used for upper elementary. Not all of it is written out because it was supposed to be used in collaboration with a classroom teacher. The wiki I created models the basic idea I had. http://kpaul.pbwiki.com/FrontPage - Kathy Paul
Here is the link to the actual lesson. http://www.u.arizona.edu/~kpaul/Lesson%20Plan.pdf

Graphic organizers work great with a projector on a whiteboard. Venn diagrams, KWL charts, story maps - Joel Zehring

Panoramio - Google Maps with photos of any location you can imagine. Search a place like "great pyramids", view the map, zoom in and out, and view images of that place.

Discovery Education offers thousands of videos. Their website categorizes each one by topic, grade level, and even standard. The database is completely searchable, making it easy to find exactly what you're looking for. Teacher guides and blackline masters for student handouts accompany almost all videos.