Geocaching is an excellent outdoor opportunity for all ages.  The initial video provides instruction on how to use a basic Garmin GPS unit.  In addition three more videos may be helpful to those planning outdoor experiences for youth:

Geocaching – Setting up the experience gives ideas on how to set up an experience in minutes.

Geocaching-Tips to Success provides some simple pieces to consider when geocaching with youth.

Kid Tracker is a great activity that involves using a GPS device to reach a destination without being caught!