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Lesson 5: Internet services

Year 7 – Networks: from semaphores to the Internet

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The internet and the World Wide Web

Starter activity

What is the internet and the World Wide Web? Are they the same?

Think, pair, share

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Lesson 5: Internet services

Objectives

In this lesson, you will:

Explain the difference between the internet, its services, and the World Wide Web
Describe how services are provided over the internet
List some of these services and the context in which they are used
Explain the term ‘connectivity’
Describe how internet-connected devices can affect you

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The internet

Activity 1

The internet was created by the US military in the 1960s and was originally called the ARPANET

The US wanted to design a system where information could be passed on even in the event of a catastrophe or nuclear attack
Data was sent along multiple routes and reconstructed at their destination
The system could keep running even if parts of it were destroyed

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The World Wide Web

Activity 1

The World Wide Web is part of 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 ‘the WWW’ or ‘the web’.

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Tim Berners-Lee

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The WWW and the internet are NOT the same thing

Activity 1

The internet is a vast network of computers all connected together.

The World Wide Web is a service provided on the internet. It is the websites, web pages, and links found on the internet.

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An internet minute

Activity 2

In a typical day, there isn’t much that you can do in a minute.

The activity that takes place in a minute on the internet is quite staggering!

For example, 2.1 million Snaps are created in one minute!

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An internet minute

Activity 2

You will be put into small groups and given an ‘internet minute’ sheet with blanks that need to be filled in.

There are 13 extraordinary facts around the room about what is done within an internet minute.

You will have a series of internet minutes to complete the task.

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Place each page of the ‘Internet minute’ teacher sheets in key places around the room. Arrange the learners into groups and give them one minute to gather the facts from an area of the room and return to enter the facts into their worksheet (on paper or electronically). Repeat this until all of the facts have been gathered.

Example: Place three fact sheets in three corners of the room and four sheets in the final corner. Split the class into four groups. Direct each group to one corner of the room when the minute starts. With 20 seconds remaining, tell the learners to return to their seats to enter the facts that they have gathered. Repeat these steps three more times so that the learners can gather all thirteen facts.

Stopwatch image source: https://pixabay.com/vectors/stopwatch-timer-watch-seconds-34107/

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An internet minute – Answers

Activity 2

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Internet services

Activity 3

There are a range of services provided by the internet. These include:

World Wide Web
Email
Online gaming
Instant messaging
Voice over IP (VoIP) – audio calls
Internet of Things (IoT)
Media streaming (e.g. watching Netflix online)

The rules for each service are different. As a result, a different protocol is used.

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Internet services: Email

Activity 4

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

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Internet services: Email

Activity 4

In 2018, 281 billion emails were sent and received every single day.
Just as with regular mail, you may get emails that you did not want. This is called ‘spam’.

What % of emails sent every day are spam? (Hands up)

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Internet services: VoIP

Activity 4

‘VoIP’ is short for ‘Voice over Internet Protocol’.
This allows voice data to be sent in packets over the internet.
It is cheaper than landline calls and can have many people on the call at the same time.
Many popular apps use VoIP to make internet calls, such as WhatsApp.

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Match up

Activity 5

You have six terms and six descriptions but they are not in the correct order.

Match them up.

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Internet of Things (IoT)

Activity 6

The Internet of Things 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.

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IoT video

Activity 6

Watch:

https://www.youtube.com/watch?v=ZTM9GA-4nBA

Name one IoT device seen in the video and give the benefits of its use.

(Think, pair, share)

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This is a good video about security concerns: https://www.youtube.com/watch?v=EKRVILAohck

Examples of possible answers:

Smartwatches: You can use the device to connect to other devices remotely, such as household appliances.
Shower: The shower can warm the water tank before your shower, which saves you time.
Car: The car can communicate with traffic systems to alert you of alternative routes during congestion, or access your diary to know where you need to go. It may also notify people that you will be late if you do get stuck in traffic.
Lighting: You can control your lighting remotely from your phone without having to move to the light switch.
Fridge: The fridge can notify you when produce has gone out of date so that you know to replace it.
Coffee maker: The coffee maker communicates with your alarm clock to brew coffee as you wake up, which saves you time.

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IoT devices: true or false?

Activity 7

SMALT: A salt shaker that allows you to dispense salt remotely via a phone app.

Furbo: A camera that detects when your dog is barking and sends your phone a message. From your phone, you can see your dog and dispense treats.

True or false?

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IoT and smart homes

Activity 8

Many IoT devices have been created for our homes.

Match the descriptions with the icons.

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Answers

Activity 8

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Activity 9

What harm could IoT bring?

What harm could IoT devices bring? (Think, pair, share)

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IoT concerns

Activity 9

Your privacy:

IoT devices collect and share information about you, with or without your knowledge. This includes microphones, cameras, and GPS location.
Companies may eventually be able to learn everything about you.

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IoT concerns

Activity 9

Your security:

IoT devices could be hacked
Example: opening a car or house door remotely without your permission

The Internet of Things has the potential to make our lives much simpler, but privacy must be protected, and it must be secure.

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Exit ticket

Plenary

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What is the difference between �the internet and the World Wide Web?

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Next lesson

Summary

In this lesson, you...

Learnt about different internet services and the difference between the internet and the World Wide Web.

Next lesson, you will…

Learn about key parts of the World Wide Web, and complete an assessment.

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