DragonflyTV . Podcast - GPS vs Compass | PBS KIDS GO!
Source : http://pbskids.org/dragonflytv/show/gps_compass.html...
One of my favorite things to do is hike in the Santa Monica Mountains. Because nobody likes the idea of getting lost, I always prepare before every trek. But what's the better navigation tool, a Global Positioning System (GPS) or a good old map and compass?