Geocaching can be a fun way to get students outside for some hands-on geography lessons. To help you find geocaching challenges in your area, Geocaching.com recently updated their geocache map. You can now switch between map views (road, satellite, street maps, and cycle maps) and search for geocaches in your area.
If you’ve never tried geocaching, the video below from Geocaching.com explains in simple terms what geocaching is and how you can get started. There’s clearly a plug at the end for Geocaching.com’s subscription service (they also have a free service) but otherwise it’s a good introduction to geocaching.