GPS: Never EVER Lost!

By a 4th grader and Mr. Welch


 Have you ever been lost?  Imagine you are hiking or sailing and you suddenly realize, you don’t know where in the world you are!  Your heart begins to pound.  Your forehead begins to sweat.  Then you smile and pull out your handy GPS.

My report will cover three interesting ideas.  First, I will write about  what GPS is and what GPS dose. Next, I will cover The invention of GPS. F

inally, I will end with The GPS satellites.

So, keep reading and let’s begin this journey about GPS.

What GPS is and what GPS does

This paragraph is about what GPS is and what GPS does.

GPS can track you anywhere on earth. It uses a fancy math called trilateration .

Marshall Brain said that

A GPS receiver can help you find where you are, anywhere on earth, as long as you have a clear enough view of the sky. If your GPS receiver can get signals from 3 or more satellites, it can figure out where you are by doing some fancy math called trilateration.


The Invention of the GPS

This paragraph is about the invention of the GPS. 

It was invented by the military  so they won’t get lost

Allison K. Brown said that

In the early 1970's, the military began developing GPS. It became fully operational in 1995.

(World Book Encyclopedia)

The GPS Satellites

This paragraph is about the GPS Satellites. 

How fast they are  

Digital Graphic Research Corporation taught that,

“A GPS can get lost if it can't hear the tunes. Radio waves travel in straight lines, and they don't pass through metal or rock easily. So in a tunnel, or downtown surrounded by tall buildings, or even under heavy tree cover, a GPS can lose its position.”



In conclusion, [Mr. Welch’s Attention Getter Follow-Up: If you never want to be scared by getting lost, be sure to have a GPS.]

I hope you enjoyed learning about GPS.  I know I enjoyed learning about .  Always remember [2nd Main Idea] and [3rd Main Idea].

[Mr. Welch’s Thanks For Reading: Thanks a lot for taking the time to read my report.]