|
Introduction
to the Internet
Why are
you here?
Because the Internet is:
Revolutionizing education
Enhancing the way teachers
teach
Turning students into
life-long learners
Providing information for
all facets of life
Giving access to vast
opportunities
Schools
are using the Internet to...
Post information for the world
to see
Take virtual tours of museums,
cities, foreign countries
Give students access to the
latest information available
Allow participation in global
projects
Bring experts to the classroom
Interact with people from all
over the world
The Basics
What is it?
How does it work?
How do I connect?
How to I acquire an E-mail
account?
What is
the Internet?
A means of exchanging
information
Computers
Computer Networks
People
A telephone network connecting
computers together
An Enabler--access to
everything
Links more than 60 million
people in 160 countries
Internet
growth
Amazing 10% growth per month
50% of traffic is educational
WWW is key to expansion
(GUI--Graphical User Interface) pictures
Web doubles every three months
E-mail represents 40% of web
use
Why the
Internet?
Born November 21, 1969
Advanced Research Projects
Agency (ARPA)
Department of Defense
UCLA
Stanford
USC at Santa Barbara
U of Utah
Internet
Design
Two major concerns
that the net be non-platform
specific
that the net be totally
redundant and fault tolerant
Fiber optic cable
1980--National Science
Foundation
1991--Public
What’s
on the Internet? How is it organized?
What You
Can Do on the Internet
E-mail
On-line conversation
Information Retrieval
Promote your business
Distribute information
Participate in public forums
Getting
Connected
Computer--RAM is important!!
Minimum of 16 megs
32 megs better and 64 megs
better (there is no end!)
Will work with 8 but very
SLOW
Modem--determines speed in bps
(bits per second)
33.6 minimum today
Current speed 56K (Not available
for all telephone lines)
Telephone
Connection
Standard phone line in your
home is required to carry a minimum of 9600 and can go to 33.6bps
ISDN--ability to double
capacity (available but at an additional cost)
Cable modems--being test
marketed (can go to 1 1/2 million bps) Web TV (Microsoft)
Software
Usually given to you by your
Internet provider
Each function of Internet has
a program
E-mail, FTP, Telnet, WWW
Browser
Web Browsers are integrated
programs
The URL
Uniform Resource Locator, the
address for a Web resource
http://www.abc.com/NewProgram/snoops.html
The protocol specifies the
type of web resource (http:www)
The Host name specifies the
server where the resource is located (abc.com)
The Directory name specifies a
particular part of the server (NewProgram)
The File name identifies the
actual document to be retrieved. Web pages are all .htm or .html, signifying
that they are created in the Web language HTML (Hyper Text Markup Language)
(snoops.html)
How people
get access--Internet Service Provider
Dial In Direct Connection
Commercial Gateway--local
number no matter where you are located.
Usually makes access
selections (point and click with mouse menu system)
Examples--AOL, Prodigy, CompuServe
Dial In Direct Connection
Local Service Provider--usually
only access by local number no connection unless long distance if you travel
Unlimited connection (you
must know how to navigate the web)--Infonet, Pennicle, WHRO
Choosing a
Provider
Cost
Reliability
Performance--ratio of users to
ports (telephone lines)
Services
Restrictions
Security
Login Name
Beginning of your address
Identifies you to your service
provider
Is case sensitive--usually
always lowercase
Is usually some form of your
name
Passwords--Guidelines
Usually must be eight
characters long
Choose a combination of
letters and numbers
Change your password regularly
Choose one that uses maximum
number of characters
Choose something you can
remember
Don’t share it with others
E-Mail
A tool to send and receive
text messages over the Internet
Time zone independent
Fast--near instant delivery
Cheap--no long distance costs
Convenient--can attach
pictures, sounds, video clips, and even software
Much like letter but in a
brief, informal, conversational style
Send/receive through E-mail
software (Eudora most popular)
E-Mail
Attachments
Create files in a word
processing program
Write E-mail message and use
program to make attachments
Windows 95 had plug-ins for
various programs
Attachments
Can literally be any type of
text, graphic, audio, video, or executable file
Often compressed (zipped) in
order to transfer more quickly
Must be converted if zipped format in order to be properly received.
What can
you and your teachers do with E-mail?
Interpersonal exchanges
Information collection
Collaborative problem solving
Gather information quickly and
conveniently
Why use
E-mail?
Enhance the writing skills
Get teachers and students
thinking about audience, tone, cultural diversity (especially when sending to
a foreign country)
Practice foreign language with
native speakers
Improve keyboarding skills
Benefits
of E-mail for educators
Enables individual teachers to
share classroom strategies
Trade success stories
Encourage others
Professional development
Gather information
E-Mail
Address
Username (only thing that you
control)
@ at symbol
host your Internet provider
sub domain
domain
Read right to left--goes from
least specific to most specific
Common
Organizational Domains
Mail Servers in US
com Commercial
edu Educational
gov Government
mil Military
org Organization
net Network
int International
E-Mail
Addresses
Always in lower case
president@
Remember read right to left
Always put something in the
subject field
this is all that shows in
individual’s mail box
Free
E-Mail Accounts
www.juno.com
Free e-mail and software
Need computer and modem
www.hotmail.com
Free e-mail from Microsoft
Sites to
Visit
www.exploratorium.com
www.si.edu
whyfiles.news.wisc.edu
www.earthwatch.com/indexs.html
info.er.usgs.gov
www.nhc.noaa.gov
www.spaceweather.com
space.jpl.nasa.gov
| 
Fly