Y4: 5. What is the internet made of?

This is Lesson 2 on Computing Systems & Networks – the Internet, taken from teachcomputing.org.

Today, you are going to….

• see how networked devices make up the internet
• describe networked devices and how they connect
• examine how the internet is used to provide many services
• realise that the World Wide Web is the part of the internet that contains websites and web pages

1.

2.

Here is a reminder:

The internet is a worldwide system of interconnected computer networks, that communicate with each other. 

Sometimes the internet is simply called the net.

3.

The internet provide us with different services.

We can share files on the internet, send emails on the internet, and we can use the World Wide Web.

Routers use routes (or paths) to get messages from one computer to another computer in the internet.

4.

Finding Routes

Networks use routes to get messages from one computer to another computer.

Have a look at these routes:

1. Find three possible routes to B.

2. What’s the quickest way to A? (Look for the fewest steps…)

3. How could you get from 3 to 4?

4. How could you get to C without going through 6.

5.

6.

Exploring websites

Have a look at these websites:

What things can you find on each of them?

Use the worksheet below. (You have to name three things for each website.)

7.

Finally, click on the link below to fill in the missing information about the internet:

The internet is connected by lots of _______. The ________ is part of the ___________, where we can visit _______ and ________.

8.

• The internet is a network of networks.
• The networks are connected to each other with routers.
• The internet provide services, like sharing files, sending emails, and letting us use the World Wide Web.
• the World Wide Web is the part of the internet that contains websites and web pages.

This is the original lesson source:

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