| An Etrex is a handheld device
that shows your position on the world. It does that by contacting different
satellites in space orbiting the earth. It shows your latitude and
longitude. The first time we used the Etrex was in the field near the school.
A group of students laid a track down, and another group tried to follow
the track to its endpoint. The first group put out 5 flags. Only one was
the endpoint of the track. Most of the groups were able to find the endpoint
and bring in the right flag. |