Lesson video

Hello, my name is Mrs. Holbrook, and welcome to Computing.

I'm so pleased you've decided to join me for the lesson today.

In today's lesson, we are going to be comparing the internet and the World Wide Web, and then we're going to be looking at some of the services we use over the internet.

Welcome to today's lesson from the unit The internet and web technologies.

This lesson is called Internet Fundamentals.

And by the end of today's lesson, you'll be able to explain the difference between the internet and the World Wide Web and describe the services the internet offers.

Shall we make a start? We will be exploring these key words in today's lesson.

Internet.

Internet, a global system of interconnected computer networks.

World Wide Web.

World Wide Web, WWW, a service provided via the internet that allows users to access and navigate linked content such as web pages.

Look out for these keywords throughout today's lesson.

Today's lesson is split into two sections.

We'll start by comparing the internet and the World Wide Web, and then we'll move on to describe the services used over the internet.

Let's start by comparing the internet and the World Wide Web.

The internet is a global network of interconnected computers.

It is an infrastructure used to share data and resources around the globe.

The first workable prototype of the internet was made in the 1960s as part of an American defence department called ARPA, Advanced Research Project Agency.

They wanted to create a network that could survive a nuclear attack.

Time to check your understanding.

I have a question for you.

What is the main purpose of the internet? Is it A, to store all of the world's information in one place, B, to control all of the computers in the world, or C, to share data and resources around the globe? Pause the video whilst you think carefully about your answer.

Did you select C? Well done.

The main purpose of the internet is to share data and resources around the globe.

The internet is a global network of interconnected systems like computers, phones, servers, routers, et cetera.

The World Wide Web is a service that is provided on the internet that contains websites and web pages.

It was invented in 1989 by an English computer scientist called Tim Berners-Lee.

The World Wide Web is also known as WWW or the web.

Sometimes people use the terms internet and World Wide Web interchangeably.

Laura says, the World Wide Web is just another word for the internet, isn't it? Do you agree with this statement? Maybe pause the video and have a think.

Ah, Jacob's got a really good response.

The internet and World Wide Web are two different things that's are often it incorrectly viewed as the same.

In order to navigate the World Wide Web, you need a web browser.

The most widely used web browsers are Google Chrome, Safari, Firefox, and Microsoft Edge.

A website is a collection of pages under one name.

A webpage is a single page or document on the World Wide Web.

Each website is made up of one or more web pages.

Every website opens with its homepage or index page.

The homepage of any website is also a webpage.

So here you can see we have the website raspberrypi.

org and this is the homepage or index page of the site.

We can see here that the website is linked to multiple web pages.

Time to check your understanding.

Which of the following best describes the internet and the World Wide Web? Is it A, they are the same thing, B, the internet is a service that runs on the World Wide Web, or C, the World Wide Web is a service that is provided on the internet? Pause the video whilst you think about your answer.

Did you select C? Well done.

Remember, the World Wide Web is a service that is provided on the internet.

Okay, we are moving on to our first task of today's lesson.

I'd like you to explain the relationship between the internet and the World Wide Web.

Pause the video whilst you complete the task.

For part two, I'd like you to describe whether each of the following statements describes the internet or the World Wide Web.

Write your answer next to each statement.

So statement A is a global network connecting millions of computers and devices.

Statement B, the system used to view websites and web pages.

Statement C, the physical cables and wireless signals that allow online communication.

And finally, statement D, a collection of linked documents, images, and videos accessed through browsers.

Pause the video whilst you complete the task.

How did you get on with the tasks? Let's have a look at some sample answers together.

For part one, you were asked to explain the relationship between the internet and the World Wide Web.

The internet is a global network of interconnected computers and devices.

It allows data to travel around the world using cables, satellites, and wireless connections.

The World Wide Web or WWW is a service that runs on the internet.

It's a way of accessing information through websites, web pages, videos, and other types of content that are linked together.

Did you have a similar answer? If you need to add any detail to your answer, you can pause the video now.

For part two, you were asked to describe whether each of the following statements describes the internet or the World Wide Web.

You were asked to write your answer next to each statement.

So statement A, a global network connecting millions of computers and devices is the internet.

Statement B, the system used to view website and web pages is the World Wide Web.

Statement C, the physical cables and wireless signals that allow online communication, the internet again.

And then lastly D, a collection of linked documents, images, and videos accessed through browsers is the World Wide Web.

Did you get all of those correct? Well done.

Okay, so we've compared the internet and the World Wide Web.

Let's now move on to describe the services used over the internet.

There are a range of services provided on the internet.

These include the World Wide Web, which we've already explored during today's lesson, email, online gaming, instant messaging, voice over Internet Protocol or voice over IP which are audio calls, Internet of Things or IoT, and media streaming, so watching movies or TV shows online.

Time to check your understanding.

I have a question for you.

Which of the following is not a service provided on the internet? Is it A, email, B, online gaming, or C, watching television using a TV aerial? Pause the video whilst you think about your answer.

Did you select C? Well done.

Watching television using a TV aerial is not a service provided on the internet.

However, if you watch TV using a media streaming service, then that would be provided over the internet.

The internet is the physical infrastructure on which the World Wide Web is based, so the servers, the routers, and the connections.

The World Wide Web is a system of documents or information in the form of websites and web pages accessible through the internet.

You can share files on the internet.

You can use the internet to send emails.

Email is an internet service that allows people who have an email address to send and receive electronic messages or emails.

Email is delivered almost instantly over great distances and is usually free.

You can attach documents to emails and email multiple people at the same time.

VoIP is short for voice over Internet Protocol sometimes called voice over IP.

This allows voice data to be sent in packets over the internet.

It is cheaper than landline calls and can have many people on a call at the same time, which is great for things like business conference calls.

Many popular apps use voice over IP to make internet calls such as WhatsApp.

The Internet of Things, IOT, means taking everyday things and connecting them to the internet.

Connectivity is the key factor.

It allows the advantages of the internet to go beyond computers and smartphones.

These connected things allow us to gather information, send information, or both.

Many household items are now being used as IoT devices.

Sensors can track temperature, motion, and light levels.

Devices can be controlled remotely via apps or voice commands.

Systems can learn your preferences and adjust settings automatically.

For example, I have some smart light bulbs in my home.

Do you have anything similar? Time to check your understanding.

Which of the following is a key feature of email as an internet service? Is it A, it requires everyone to be online at the same time to communicate, B, messages are delivered almost instantly over great distances, or C, it allows you to send only short messages without attachments? Pause the video whilst you think carefully about your answer.

Did you select B? Well done.

A key feature of email is that messages are delivered almost instantly over great distances.

So I can email someone on the other side of the globe and they'll get the message almost instantly.

Okay, we are moving on to the second task of today's lesson, and you've done a great job to get this fast, so well done.

For part one, I'd like you to describe three different services that are used over the internet.

You need to explain what each service allows users to do.

Pause the video whilst you complete the task.

How did you get on? Did you manage to describe three different services that are used over the internet? Well done.

Let's have a look at some sample answers together.

So the first one we have here is email.

This service allows people who have an email address to send and receive electronic messages.

Email is delivered quickly over long distances and is usually free.

You can also send files with emails and send the same message to many people at once.

For our second example, we used voice over IP or voice over Internet Protocol.

This service allows people to make audio calls using the internet instead of traditional phone lines.

Voice over IP is often cheaper than landline calls and can support calls with multiple people at the same time.

Popular apps like WhatsApp use voice over IP.

For our final example, we've used the Internet of Things, IoT.

This involves connecting everyday objects or things to the internet.

This connectivity allows these things to gather information, send information, or both.

This extends the benefits of the internet beyond just computers and smartphones.

Did you have any other examples? Remember, if you need to pause the video and make any corrections or detail to your response, you can do that now.

Okay, we've come to the end of today's lesson, Internet Fundamentals.

And you've done a fantastic job, so well done.

Let's summarise what we've learned together during today's lesson.

The internet is a global network connecting computer networks, enabling the sharing of information.

The World Wide Web or WWW is one of the key services that uses this infrastructure.

The internet supports many services and it is a platform that enables communication, access to information, and the use of online tools and applications.

I hope you've enjoyed today's lesson and I hope you'll join me again soon.

Bye for now.