Lesson 4Searching the World Wide Web Introduction to College Research Instructor: Amber Burtis
Questions answered in Lesson 4This lesson will answer the following questions:• What is the Internet? The World Wide Web? And is there a difference between them?• What is a URL? And what does it stand for?
Questions answered in Lesson 4• What are some of the most common Domain Names and Country Codes used in URLs?• What is the difference between a web directory and a search engine?• How do I use the advanced features of Google? And how do I use Google Scholar to find articles?
What is the World Wide Web?• Keep in mind that the World Wide Web is different than the Internet.• The World Wide Web (or WWW) is a network of hyperlinked information sources, called web pages, which provide text, graphics, videos, animation and sound.• Hyperlinked means that information on one web page is linked to another web page. This is what creates the “web” between all the pages on the World Wide Web.
What is the Internet?• The Internet is what makes the World Wide Web possible. It is the worldwide system of interconnected networks and computers.• The Internet uses network protocols (called TCP/IP) to facilitate data transmission and exchange between computers.
What is the difference?• So what exactly is the difference?• The World Wide Web is what you see on your computer when you look at a web page, but the Internet is what is behind all of it. The Internet is what allows your computer to “talk” to other computers.• Make sense? If not, read this definition: http://legacy.teachersfirst.com/tutorial/webintr o.htm
What is a URL?• URL stands for Uniform Resource Locator.• URLs are also called web addresses. For instance: http://www.facebook.com http://www.google.com/• Let’s take a more complicated URL and break it down. This is important to be able to do because it can tell you a lot about the source of the web page …..
http://admissions.siuc.edu/apply/index.php• http:// stands for the network protocol used by computers on the Internet to send files back and forth. It stands for hypertext transfer protocol.• admissions.siuc.edu/ is the domain name. It is often the top level of a web site.• apply/ is the pathname. Think of it as file folder within the domain name.• index.php is the file name. Think of it as a file within the pathname file folder.
Domain Name Categories/Country CodesIt is also important to know the source of adomain names. Below are some common domainname categories and country codes. These willtell you the source of the web site. Domain Names Country Codes .EDU (Education) .CA (Canada) .COM (Company) .AT (Austria) .GOV (Government) .UK (UK) .MIL (Military) .DE (Demark) .ORG (Organization) .FR (France)
Domain Name Categories/Country Codes Here are some examples and the category or country that they represent: http://www.siuc.edu/ (Educational source) http://www.apple.com/ (Business source) http://www.nasa.gov/ (Governmental source) http://www.google.ca/ (Canadian source) http://www.apple.com/fr/ (French source)
Is Google the Best Search Engine?• No search engine will find everything on the Web. For instance: Only about 60% of web pages found by Google are also found by other search engines. Only 50% of web pages found by one search engine are also found by all other search engines. (From http://www.misprofessor.net/search.ppt)• Google is one of the best, but you can also use other large search engines like: Ask.com, Bing, Google, or Yahoo! Search.
Using Google Advanced Features• To get the best results in Google use the Advanced Search feature. To get to it, you have to do a Google Search for your topic and then click on the link to the right.
Some of Your Options:• Limit your search to a specific language.• Search a specific site or domain category (.org or .gov).• Limit file type to a Word Document (.doc) or PowerPoint (.ppt), etc.
Searching Google with AND OR NOT• You’ll probably remember how to use the words AND, OR, NOT from the last lesson about Finding Articles at Morris Library.• You can also use these words to limit your searches in search engines like Google.• Here are some examples: AND finds pages containing all your word jazz AND singers
Searching Google with AND OR NOT OR finds pages containing any of your words singer OR vocalist OR musician NOT excludes any page containing that word jazz NOT bluesNote: in Google you have to replace NOT with the minus sign (-). Also remember to capitalize AND & OR.There’s one more Advanced Feature to look at…
Google Scholar NOTE: Google Scholar is an alternative way to search for scholarly journal articles. Remember we searched library databases in the lesson before this. Google Scholar is just another (and sometimes easier) way to do that. To get to Google Scholar you must go to the Articles and Databases tab on the library’s homepage.
NOTE: Type in your search terms and then look for “Find Full Text @Morris” to link into Morris’ library databases. If you’re off campus you’llhave to go into “Scholar Preferences” (top right hand side of screen) toselect your affiliation with SIUC under “Library Links.” If you don’t see it you can also go to http://proxy.lib.siu.edu/login?url=http://scholar.google.com/
Assignment Go to the course homepage and do Assignment #4. E-mail me the assignment (either as an attachment or with the answers in the body of the e-mail) and then go to Blackboard to take Quiz #4 under the Assessments link.