Transcript Internet Terms - Lilburn Elementary School

Internet Basics
for Lilburn
Elementary
Lisa Campbell,
Media Specialist
What is the “Internet”?
• The Internet is a
worldwide
collection of
computer
networks
The Internet is the ….
• Plumbing that
connects all the
computers so
they can “talk”!
This “talk” can take several
forms:
•Email
•Wiki’s -- Discussion
groups like
Facebook
What is the “World Wide
Web”?
• This is the
information on
those computers.
• When you search for information, you
are really searching other computers.
• All the information on all the
computers all over the world is the
World Wide Web!
• (All connected by the plumbing, or
the “internet”.)
How to search for facts:
We have a choice of two tools:
• Search Engine
•
Database
What’s the Difference?
Search Engine
• A search engine, like Google,
is a robot that finds web
sites containing the exact
words you were looking for.
• No humans are involved.
The bad news about Search Engines:
• Search “penguins”
• What you might get:
• Penguin Tires, Inc.
• Penguin Skateboards
Keywords!
Google remembers 10
words. Be specific!
Making a cake?
•Google “cake recipe”
•29,200,000 results – that’s 29
MILLION!!
Keep adding words
• Add “chocolate cake recipe”
• 18,000,000 results - 18 MILLION
Keep adding words
• Add “sour cream banana
chocolate cake recipe”
• 3,770,000 results – 3 MILLION
Keep adding words
• Add “coconut sprinkles sour
cream banana chocolate cake
recipe”
• 214,000 results – WHEW!!
Coconut Sprinkles
Sour Cream
Banana Cake
Recipe
200,000
Sour Cream
Banana
Cake
Recipe
3 million
Chocolate Cake
Recipe
18 million
Cake Recipe
29 million websites!
The more
keywords you
add, the smaller
your results!
Red Toyota Camry
in Lilburn, GA
63 Thousand
Red Toyota
Camry
28 million
Toyota Camry
124 million
Toyota
1 BILLION websites!
Database
• Look at the word:
• Data = facts
• Base = place
• A human takes facts from the internet,
reads it and makes sure it is correct, then
keeps it in one place.
Database
•You can usually trust what
you read in a database, like
Britannica or Worldbook
online.
What is a URL?
• A URL is the site address on the
world wide web. It stands for
“Uniform Resource Locator” (geeky
computer talk)
What is in a URL?
• http - HyperText Transfer Protocol
• More geeky computer talk!
• indicates a Web document or directory. Most of the URLs you
will use start with http, which is the method by which data is
transferred over the Web.
• www – world wide web
• Example: Gwinnett County Public Library
• http://www.gwinnettpl.org/
What’s that at the end?
•http://www.gwinnettpl.org
Domain names
• .com = commercial
• .net = network
• .org – non profit
• .edu = educational institution
• .mil = military
• .gov = government
New Domain Names
• .aero = air transport industry
• .biz = businesses
• .coop = cooperatives
• .info = unrestricted use
• .name = individuals
• .museum = museums
• .pro = professionals
• There are lots of them!
Country Codes:
• .au - Australia
.br - Brazil
.ca - Canada
.fr - France
.hk - Hong Kong
.il - Israel
.in - India
.it - Italy
.mx - Mexico
.tw - Taiwan
.uk - United Kingdom
Get used to glancing at the URL
• A crook pretending to be Ebay!
• URL from Romania! It was right in the
URL.
• cgi.ebay.in/romania_WQ44vmds8767204
• Many fell for it and lost their money!