Looking for STEM Education ideas, see http://k12lab.com/
This is a website to find and share STEM education ideas. It is sponsored by NI (the makers of LabVIEW and the NXT Software) so it has a lot of stuff on Robotics!
Another website with some NXT stuff on it is from UofM’s own GEE (Girls Experiencing Engineering) Website at http://www.livebinders.com/play/play_or_edit?id=121247
And from the above, my favorite link: http://www.nxtprograms.com/NXT2/multi-bot/steps.html