gps in education arlington isd, instructional technology department october 21, 2006
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GPS in Education
Arlington ISD, Instructional Technology Department
October 21, 2006
Navigation Before GPS
landmarks
Navigation Before GPS
Land in sight
Navigation Before GPS
night sky
Navigation Before GPS
chronometer
Navigation Before GPS
sextant
Navigation Before GPS
TRANSIT satellite
GPS
NAVSTAR Global
Positioning System
GPS
Manpack
GPS
Precision Lightweight
GPS Receiver (PLGR)
GPS
So how does it work?
http://video.howstuffworks.com/hsw/player.htm?v=gps
Google Earth
• Free download– http://earth.google.com
• Satellite Imagery
• KMZ’s
Geocaching Background
• Started August 2000
• “Geo” means “earth/geography”
• “Cache” means “container”
• 319,509 caches in 222 countries
• Free (once you have a GPS receiver)
How it Works
• Geocacher searches by zip code for caches in a certain area
http://www.geocaching.com
• Takes the GPS receiver and locates the cache
• Open cache, sign log book, trade items
• Replace as it was found
• Log find on the website
Geocaching Rules
• CITO
• Leave no trace
• No food/candy
• Don’t trade “down”
• Don’t give away the hide in the logs
• Adhere to the creed
Geocaching Lingo
• TFTC
• TNLN
• FTF
• “Muggles”
Types of Caches
• Micros
• Regular/Small
• Virtual
• Multi-cache
• Where’s George
• Letterboxing
Trackables
• Travel Bugs– http://www.geocaching.com/track/search.aspx
• Geocoins
• White Jeeps
Explorist 100
• Power button on right side
• Allow 2 minutes for the satellites to lock on– 3 solid bars
– Will automatically advance to next screen
Explorist 100 (ctd.)
• Odometer tells how far you’ve traveled
• Location screen
Explorist 100 (ctd.)
• Reading the coordinates
Current Position Desired Position
32°46.143 N 32°46.197 N
97°04.816 W 97°04.749 W
In which direction do you need to travel?
Explorist 100 (ctd.)
Has a built-in digital compass.
Compass only works when traveling at least 3 mph.
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