The document discusses the educational potential of geotagging and geocaching using handheld devices. It defines geotagging as adding location metadata like coordinates to media like images. Geocaching is described as an outdoor treasure hunting game where people use GPS to hide and find containers around the world. The document proposes some ways these technologies could be used for educational purposes, such as managing fieldwork images, developing geocaching materials to teach others, and assigning travel bugs to follow long distances.