Mr. Willard using the internet for research PowerPoint Presentation

Mr. Willard  using the internet for research PowerPoint Presentation

2018-11-15 10K 10 0 0

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Search. . Engines. Robots . (“Spiders, . Webcrawlers. ”). No more human selection. Collection rather than selection—everything on the Web is included in a search. Show Google and show number of sites indexed (at bottom of front page) and number of hits for a key word (e.g. “Columbus”).. ID: 729394

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Presentations text content in Mr. Willard using the internet for research

Slide1

Mr. Willard

using the internet for research

Slide2

Search

Engines

Robots

(“Spiders,

Webcrawlers”)No more human selectionCollection rather than selection—everything on the Web is included in a searchShow Google and show number of sites indexed (at bottom of front page) and number of hits for a key word (e.g. “Columbus”).

A search engine is a program designed to search for documents on the Internet using keywords. Examples: Google, Bing, Infotopia

Uses software robots called “spiders” to search millions of pages on the World Wide Web

Stores information compiled by spiders into a huge online library called an index

Fetches results from indexes when a user types in keywords

Sorts and displays information using a complex program called an algorithm

Slide3

Website addresses

Websites have an address called a

Uniform Resource Locator (URL)

Top-level domains

tell you what kind of person or organization runs the site: .com = commercial

.org = organization (usually non-profit).edu = educational institution (usually college).gov = government agency

.edu and .gov are restricted; others are available to anyone who wants to use them

Personal web pages: the tilde (~)

Slide4

The Publication Process

Book:

Author

Publisher

EditorBookstoresReviewerLibrarian

Internet:AuthorInternet

Advantage: At each level, poorly-prepared materials are weeded out

Disadvantage: No selectivity; anyone can publish

Slide5

The Good stuff

Subscription

databases:

Include journals, magazines

, newspapers, books and more. Most are available via the Internet, but aren’t freely available to the public. Libraries make them available, though.

Subject directories: Allow you to browse Internet resources by subject category. They are created and maintained by human editors (librarians) that review and select sites based on usefulness.

Slide6

research suggestions

Remember - not everything on the Internet is reliable

To get familiar about a topic, read a book first

Check facts with other sources


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