Welcome to the Internet

Unit 2 - Lesson 1

Welcome to the Internet

Computer Science Principles

Open Ended

We’ve learned to represent images, text, and sound digitally - but, we haven’t discussed what we do with all this digital data. How do you see people sharing this kind of data in the real world? Who do they want to share it with and why?

Open Ended

What is the Internet?

Open Ended

What questions do you have about how the Internet works?

What is the Internet?

• When you enter a web address in a browser and hit enter, what happens?

  • At some point you see the web page, but what happens in between?

CSP Welcome to the Internet - Activity

CSP Welcome to the Internet - Activity

Do This: Head to Level 4 on Code.org and connect with someone in the class

Partner #1 -
(Dani)

Partner #2 -
(Hannah)

CSP Welcome to the Internet - Activity

Do This:

Explore the Internet Simulator. How does it work? What can I do with it?

Internet Simulator

• Different sections of the widget

  • Received Message Log

  • Sent Message Log

  • Send a Message

• You can turn on/off the layers of abstraction (binary, decimal, ASCII)

• The graphic shows a direct line between you and your partner

Open Ended

How is the Internet Simulator similar to the Internet? How is it different?

Internet Simulator

• Similarities

  • Can send information to another person

  • Comes back to binary (zeros and ones)

• Differences

  • Can only send text

  • Takes a couple seconds to send a text instead of instantly

CSP Welcome to the Internet - Activity

Wrap Up

• "You can't escape from contact with the Internet. So why not get to know it?" - Vint Cerf

• Some of the largest issues facing society hinge on an understanding of how the Internet functions

  • Related to people taking advantage of the open protocols that make the Internet function

Wrap Up

• Two major issues:

  • Net Neutrality- legal debate that Internet service providers should enable access to all content and applications regardless of the source AND without favoring or blocking particular products or websites

  • Internet Censorship- attempt to control or suppress what can be accessed, published, or viewed on the Internet by certain people

    • Used both to protect people from harmful information but can also be used to limit free speech

Open Ended

How do you use the Internet? Think about your typical day. When are you using the Internet? For what purposes? What role does it have in your life?

Wrap Up

• Interact in lots of ways both at home and at school

  • Phones

  • Tablets

  • Computers

• Use in lots of ways too

  • Message friends and family

  • Work on homework

  • Research information

• Internet has a HUGE impact on our lives