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Understanding URL’s

Learn the basics of URL's and internet addresses. Find out how to enter them correctly, the different parts of a URL, and common errors to avoid.

jreynolds
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Understanding URL’s

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  1. Understanding URL’s How to Use Internet Addresses

  2. Addresses  Every home in the United States has an address so people can find it and make deliveries of mail and other items to it.  Each place you “visit” on the Internet also has an address, and for much the same reasons.  However the Internet is less tolerant of mistakes in an address than is the U.S. Post Office. Each Internet address must be entered exactly, with every punctuation mark in place or it will not work.

  3. Uniform Resource Locators URL  The URL is a web sites’ address on the Internet.  The line where the address is entered is called the address line.

  4. Try This!  Bring up the Internet Browser (Internet Explorer) on your computer screen and enter this URL in the address line:  www.nasa.gov  Then press return/enter to “travel” to this address on the Internet.

  5. 4 Basic Parts of a URL http://www.nasa.gov 1 2 HyperText Transfer Protocol (http://)- this shows it is an Internet address. www stands for World Wide Web. The next part of the address here is nasa, the name of the computer or “server” to which you connect. This is called the domain name. Often the domain names are shortened, for example, nasa stands for National Aeronautic and Space Administration. The group that owns the server is the domain designator (.gov).  3 4  1. 2. 3. 4.

  6. Domain Designator  org = organization  gov = government agency  k12.mi.us = a MI public school  mil = military agency  com = commerce or business  edu = university  net = network of computers  aus = Australia  It = Italy

  7. http://www.multiplication.com 1. What does www stand for? ________ 2. What is the name of the computer or server that displays this site? ___________ 3. Which part of the URL identifies this as an internet address? ______________ 4. What is the domain designator in this URL, and what kind of group does it show owns this site? ______________

  8. Guess the URL  www.timeforkids._____  www.carman.k12.____.____  www.msu._____  www.army._____  www.redcross._____

  9. 5 Common Errors in URL’s  One of the parts is missing, for example, omitting www.  Wrong domain designator, for example, people often substitute .com for .org  Punctuation errors, for example, people often confuse forward slashes(/) and back slashes (\), and hyphens (-) for underlines (_)  Punctuation omitted, for example, leaving out a “dot”  Misspellings

  10. Try This! Find the Error…  http://army.mil  http://www.brainpop.org  http://www.funbrain.k12.mi.us  http://wwwmsu.edu  http://www.study island.com  http://www.timfourkids.com  http:\\www.nasa.org

  11. URL’s in Research Discussion  Examine the usability of a URL for a specific purpose.  What domain designator would you use to research animals?  What domain designator would you use to research weather phenomenon?  What domain designator would you use to research World War II planes?

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