Curated OER
Meet Geodesy-The Science Behind GPS
High schoolers discover how a datum of reference points are used to to describe a location. In this Earth Science lesson, students will simulate how a GPS accurately determines the location of reference points within a datum.
Curated OER
I Know Where You Are!
Students study what a GPS is and use it to challenge themselves and find positions on a map. In this investigative lesson students find various points on a map using a GPS system and answer questions on a worksheet.
![Noaa: Survey Mark Hunting [Pdf] Activity](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Noaa: Survey Mark Hunting [Pdf] Activity")
NOAA
Noaa: Survey Mark Hunting [Pdf]
Hunt for survey marks that can possibly be found in your community. These markers may be very old and have been used to pinpoint exact locations for planning and building around the country.
American Geosciences Institute
American Geosciences Institute: Earth Science Week: Survey Mark Hunting
In this activity, students find data on a location and description of survey marks in the area, and then they search for them through a variation of geocaching.