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, 1 I will write about what GPS is and what GPS does.  Next, I will cover the invention of the GPS.  Finally, I will end with the GPS Satellites. Andrea Keep Reading Statement: So, keep reading and let’s begin this journey about GPS.

What GPS is and what it does

This paragraph is about what GPS is and what GPS does

GPS is just like a map, except it is digital. GPS helps to tell you where you are. The army uses GPS a lot.   It   is like a map that shows you where to go.  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.  GPS was invented so that people in the army would not get lost. Allison Brain 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 th e GPS Satellites. There are 24 Satellites   Marshall Brain taught that, The Global Positioning System (GPS is actually a constellation of 27 Earth-orbiting satellites (24 in operation and three extras in case one fails). (


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 will write About GPS.  Always remember what are GPS and what it does and the Satellites. Thanks For Reading: Thanks a lot for taking the time to read my report.