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CPT 499 Internet Skills for Educators Session Three Class Notes.
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CPT 499 Internet Skills for Educators Session Three Class Notes
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Transcript of CPT 499 Internet Skills for Educators Session Three Class Notes.
CPT 499 Internet Skills for Educators
Session ThreeClass Notes
Objectives
Use the Search Button on the browser to access a search engine
List several search enginesUse multiple search engines in a
query
Objectives
Distinguish between Boolean operators: And, Or, Not
Explain the process of searching the Web
Describe the structure of the URL
Objectives
Use the Find Command under the edit menu
Use the Save Command under the edit menu
Download an image or document from the Web
Search Engines
Search Engines provide a more productive means of surfing the Web
A search engine is a program that handle queries and provide a search form for the user to enter search criteria and locate Web resources.
The search engine scans its database to see which documents are related to the key word(s) requested.
Search Engines
The results page will show you how many hits (documents) it found on the database.
The results page will list titles of the documents it finds, and a hyperlink to each document.
Each engine uses a special program known as a spider to automatically search the Web on a periodic basis, looking for new documents to add to its database.
Search Engines
The larger the database the greater the number of hits.
The search engine you choose to use is up to your own personal preference.
Search Engines
SOME COMMON WEB SERARCH ENGINESSite URL
Yahoo http://www.yahoo.comLycos http://www.lycos.comWebCrawler http://www.webcrawler.comAltaVista http://www.altavista.digital.comInfoSeek http://www.infoseek.comMetacrawler http://www.metacrawler.comOpen Text http://www.opentext.com
Search Engines
All queries are combinations of the logical (Boolean) operators.
The Boolean operators are AND, OR, and NOT
The way in which Boolean operators are specified depends on the search engine.
Search Engines
If you are unsure check the online help provided with the search engine.
Queries can be conducted in the form of a key word search.
Search Engines
A program which systematically searches Web for documents on a specific topic
Uses a key word(s) as a query
Search Engines
Several search engines availableEach search engine has its own
databaseNo search engine is best
Search Engines
Uses Boolean (logical) operatorsReturns hits (matches) or
documents once search has been submitted
Search Button
Usually offers several prominent search engines for user’s choice
More engines are usually available on the page either by scrolling on the page on through links to other engines
Search Button
Can construct key word(s) searchCan use category structure
established by search engine
Search Button
Browser logo and status bar keeps user informed of the progress of a search
Popular Search Engines
Alta Vista www.altavista.digital.com
InfoSeek www.infoseek.com
Lycos www.lycos.com
Yahoo www.yahoo.com
Metacrawler www.metacrawler.com
Search Rules
Specify Boolean operatorsAnd -- includes all findings of all keyword(s)
Or ---- looks for only one of the specified key word(s)
Not -- allows user to exclude certain key word(s)
Search Techniques
Use multiple search enginesUse online help about search
criteria used for the engine selected
Bookmark Command
Bookmarks allow the user to return to a site without repeating a search
Pull down Bookmark and click Add Bookmark to save URL
Find Command
Find allows user to enter a specific character string within a long document
Enables user to find information quicker
Save Command
Save allows user to save and download (FTP) images and documents from the Web
Organization Names
gov governmentedu educationorg nonprofit or
clearinghousecom commercialnet networkmil military
