# data[].attributes.body
Exercise 2. Know your browser so that you can protect yourself

1. Open any browser. Press the key combination Shift + Ctrl + Supr. This opens a window where you can delete your browsing data (Figures 2 and 3).

2. Press the Eliminar button to delete everything that has been selected. Nonetheless, there will be some terms that you do not understand.

3. Click on “Acerca de la eliminación del historial de exploración if you are using Internet Explorer (Figure 2) or the equivalent option in another browser. A web page will appear explaining what cookies and forms are, etc.

4. Open a text document and create a table like the one below. Now complete it with the meanings of the terms that you find.​

Browsing history | Explanation
Cookies | Information that is stored on our computer by websites to remember our preferences, such as the sites we have visited, what we like, what we usually do, or our location.
Form data |
History |
Download history |

1. Do an online search for information and answer the following question in the same document: what is private browsing?

2. Remember that mobile phones also have a browser: check your privacy settings when you browse on a mobile phone.

# data[].attributes.body
EXERCISES



1. Give the meaning of these abbreviations and explain each concept: TCP/IP, DNS, URL.

The TCP/IP Protocol or Transfer Control Protocol consists of a standardized agreement on which the transmission of data between the participants of a computer network is carried out.
The Domain Name System (DNS) is the telephone directory of the Internet. People access information online through domain names like nytimes.com or espn.com. Web browsers interact using Internet Protocol (IP) addresses. DNS translates domain names to IP addresses so that browsers can load Internet resources.
A URL (Uniform Resource Locator) is the unique and specific address of each page or resource that exists on the web, from the front page of the news website that you consult every morning to the GIF that you are going to share in the text that you are writing . Each page, each resource, is linked to a URL, because otherwise the browsers could not locate the information requested by the user.

Give an outline of the main tools used to protect people and computers. Now explain what each one protects us from.
AVG is an antivirus and internet security package, which includes protection against viruses and spyware. AVG provides real-time protection, and also scans emails, files, programs and whole computer drives, either at set times or on demand, to check for threats to your home computer. AVG is free for home users. A paid upgrade is available if you want to access additional features.
ZoneAlarm is an award-winning firewall that protects your home computer against hacker attacks and spyware. ZoneAlarm is easy to install, set up and customize, and comes with a free security toolbar, which provides security information about the websites you use. ZoneAlarm firewall is free for home users. If you want to purchase the full ZoneAlarm security suite, a paid upgrade is available.
Ad-Aware is a free antivirus and anti-spyware program that detects and removes security threats, such as viruses, spyware, Trojans, adware and malware. Ad-Aware performs thorough system scans at regular intervals to check for security threats to your home computer. It also offers real-time protection against new threats. A paid upgrade is available for those requiring extra features.

Use an example to explain why our attitude is our best protection on the Internet.
because we have to be aware of what we do and what we are looking for so as not to get into trouble

# data[].attributes.body
The Internet is a network of thousands of computers and devices around the world connected by copper wires, fibre optics, wireless connections and other methods.

Sometime soon, we will be using the Internet of Things, which will enable us to interact with everyday objects connected to the Internet. This development will interconnect people and objects and reduce or eliminate barriers of time and distance. Many more things than people will be connected to the Internet: the Internet revolution and its continuous development will radically change the way we understand the world.

# data[].attributes.attachment_link.title
Viruses and Trojans, Spyware, Types of Hackers

# data[].attributes.body
1. n point 4 of the Privacy & Terms section, WhatsApp explains which users can see your status in the application and which users you can hide this from. Complete the important permissions cell with this information.

Exercise 3. Snapchat

1. Go to https://es.wikipedia.org/wiki/Snapchat and read about how Snapchat works. Copy the services of the application and complete the relevant cell in your table.

2. Now go to the Snapchat page (www.snapchat.com) and select Terms of Service in the LEGAL Section. The minimum age for using the application is indicated in Point 1. Copy and paste this data in the relevant cell of your table.

3. In point 2 of the same section, Your Content, read the permissions that you grant to Snapchat on any of the content that you exchange with this application. Try to understand what each permission involves. Complete the important permissions cell with this information.

4. Go to the Privacy Policy section and read the Information We Get Automatically When You Use Our Services section. Select five items of your data that are collected by the application and insert them in the relevant cell of your information table.

Exercise 4. Analysis

Below the table, write a short analysis indicating the most relevant points for the services received and the data provided by users. Save the file with the name Unit02_P5_namesurname.

# data[].attributes.body
Internet. Security and responsibility

In the computer room

Practical 2. Find the information: successes and failures

We are going to play a game where we search for information to find out how difficult it is to obtain the correct answer to specific questions about the Internet and to demonstrate our research skills.

Rules of the game

1. Read each question in order, search the Internet for the information to answer it and then type your answer in a word processor file with the name Unit02_P2_namesurname.

2. Each answer leads to the next question.

3. You must answer every question.

4. For every correct answer, you win a point. For every question you get wrong, you lose a point.

5. You can use any browser and search engine.

6. Look for reliable sources of information.

Let's begin:

1. The image in Figure 4 shows a concept related to the Internet. What is this concept? It starts with the letter D. We will call it WORD 1 in the next question.

2. What does the WORD 1 jp mean, represented by the top cube in Figure 4? We will call it WORD 2.

3. The last letter of WORD 2 is the first letter of WORD 3, the surname of a person connected to a very important and destructive invention. What surname is WORD 3?

4. WORD 3 amassed a great fortune from his inventions and left it to create prizes called after him. Which Spanish writer was awarded this prize in 1989? We will call this WORD 4 (even though it is three words: two names and surname).

5. Put the last word of WORD 4 in the masculine form and you will have an invention. In what year was it invented? The year is WORD 5 and the last one of the game.

All the answers are hidden in this QR code. Ask your teacher for permission to scan the code using a QR code reader (mobile app) to see the answers.

Count up your points and see who won.

ChallengesChallenge 1. Can you carry on the game by thinking up three more questions? Save your questions in a text document called Unit02_P2_namesurname_challenge1 and pass it on to a classmate to answer them.

# data[].attributes.body
HOW THE INTERNET WORKS
1. Users can connect to the Internet if they have a contract with an Internet service provider (ISP) and pay a set fee. When we switch on a computer and connect to the Internet, our ISP (for example, Movistar, Jazztel, Ono, etc.) assigns an address to our computer, called an IP address. Every computer is assigned a unique address on the Internet.

2. A router is a device that lets us connect to the Internet. Once connected, we open our browser and type the address of a page in it (URL). At this point, information starts to travel in the form of packets. The information sent out is the request or address of the web page that we want to visit and the information that is sent back is the content of the web page.

3. The next step in the information's journey are the DNS. It would be very difficult to remember the IP address of every website that we could connect with. DNS servers simplify this task for us. DNS stands for domain name system and these servers assign a name to each IP address in the same way that a telephone directory assigns names to telephone numbers so that we do not have to remember them all.

For example, if we type the IP 64.233.189.104 in our browser, we are connected to the Google home page, which is the same as typing in "https://www.google.es".

Each web page is also assigned an IP. This way, we can identify the origin and destination of the flow of information.

# data[].attributes.body
Exercise 2. Know your browser so that you can protect yourself

1. Open any browser. Press the key combination Shift + Ctrl + Supr. This opens a window where you can delete your browsing data (Figures 2 and 3).

2. Press the Eliminar button to delete everything that has been selected. Nonetheless, there will be some terms that you do not understand.

3. Click on “Acerca de la eliminación del historial de exploración if you are using Internet Explorer (Figure 2) or the equivalent option in another browser. A web page will appear explaining what cookies and forms are, etc.

4. Open a text document and create a table like the one below. Now complete it with the meanings of the terms that you find.​

| Browsing history | Explanation
| Cookies | Information that is stored on our computer by websites to remember our preferences, such as the sites we have visited, what we like, what we usually do, or our location.
| Form data |
| History |
| Download history |

1. Do an online search for information and answer the following question in the same document: what is private browsing?

2. Remember that mobile phones also have a browser: check your privacy settings when you browse on a mobile phone.

# data[].attributes.body
You must have permission from your parents or legal guardians to do this practical.

In this practical, we are going to look at two popular chat applications: WhatsApp and Snapchat.

Exercise 1. Create an informative document

Open a new document in a word processor and then create a table like the one in Figure 12 to collect all the information from this practical. Complete each cell of the table with the information from the following exercises.

Exercise 2. WhatsApp

1. Go to www.whatsapp.com and read the How it works section. In the table in your document, copy the services available in WhatsApp.

2. Now find the Privacy & Terms section and go to point 9: Ability to Accept Terms of Service. Find the minimum age of use and complete the relevant cell in the information table with this data.

3. Also in the privacy and terms section, find paragraph B of point 3, WhatsApp Access, and look for the two pieces of information that WhatsApp takes from your telephone. Add this information to the relevant cell of your table.

# data[].attributes.body
1.        Open the browser and go to https://es.padlet.com to start using Padlet. Click on Sign up and sign in with your Gmail account (Figure 7). If you do not have a Gmail account, you can create a Padlet account.

2.        After signing up, a blank screen will appear with a toolbar on the right.

3.        Click on the Settings icon and, under the Basic Info tab, choose a portrait image. Enter the title "S.O.S. My Computer is Under Attack!" and type "Computer threats on the Internet" (Figure 9) in the description.

4.        Now go to the Wallpaper tab and choose Wood.

5.        In the Layout tab, select Freeform.

6.        Double-click on the wallpaper on the screen to start publishing entries. As the title of your first entry, type "Viruses and Trojans" and copy the information from the "Learn" section of this unit about viruses and Trojans (Figure 10). Click on the camera icon and upload the image Unit02_P4_Virus.jpg from the virtual CD.

7.        Repeat the process with the information and images on spyware and hackers.

8.        Now create another entry to include a video on Internet security. Type "Security Videos" as the title of this entry and enter the description "Viruses". Click on the video camera icon and paste the address of the video that you will find in the text file Unit02_P4_Security_videos_addresses of the virtual CD.

9.        Repeat these steps to insert the spyware video.

10.     Click on the Address tab and change the address of your padlet. Type "computersecurity" as the address (Figure 11). Open a new tab in the browser and type in the full address to view the result

11.     Select Share / Export from the toolbar (Figure 8). You have several options here, including emailing the padlet to somebody, inserting it on a website and exporting it as a PDF file.

12.     Choose the Mobilize option and copy the QR code. Scan the code with a code reader to see the result. Paste it into a text processor and save the document as Unit02_P4_namesurname.

Scan this QR code with your mobile phone to see how your practical should look:

# data[].attributes.body
. Here are some simple guidelines to help you publish information safely.

Talk to your parents about your Internet browsing; they can always help if you are unsure about anything. If you receive something unusual or unpleasant, talk to an adult about it or report it.

On the Internet, do not ask for or give out data such as addresses, passwords, telephone numbers, the place where you study, places where you normally hang out or any other information that could identify you. Use aliases and nicknames that do not contain your date of birth or information about you.

Do not talk to strangers. People are not always what they say they are. Be wary of anybody who wants to know a lot of information about you. Remember that there are safer ways to make new friends.

Turn your webcam to a dead angle or put a sticker over it when you are not using it so that it cannot record images. Webcams can be operated remotely by malicious software. The police have been warning us for years that the images we think come from the webcam of another person are often actually images that they have faked.

# data[].attributes.body
Solutions:

Antivirus.  An antivirus is a program that can project our computer from attacks by viruses and Trojans if it is kept up to date. Antivirus software searches for fragments of characters that are characteristic of viruses and compares them to its databases

Firewall.  A defence system that controls and filters te incoming and outgoing traffic of a network through our computer ports. It displays alerts to ask for confirmation for an program that uses the internet conection.

White Hacking.  Activity carried out by people who help individuals and buisnesses to discover how secure their systems are against malicious hackers.

Cryptography.  The encryption of informaton to protect files, communication and passwords

Passwords.  These can enhance the security of a file, folder or computer on a local network or the internet. The security lever of our computer user will be different to the security level of a Wi-Fi router, for example.

# data[].attributes.body
The Internet is a network of thousands of computers and devices around the world connected by copper wires, fibre optics, wireless connections and other methods.

The Internet of Things is a revolutionary concept that describes the connection of everyday objects to the Internet so that we can interact with them.

A browser is a programme that displays the content of web pages.

A search engine is a computer system that indexes files stored on websites. Search engines keep their results up to date by continually crawling the Internet.

# data[].attributes.body
1. Open the browser and go to https://es.padlet.com to start using Padlet. Click on Sign up and sign in with your Gmail account (Figure 7). If you do not have a Gmail account, you can create a Padlet account.

2. After signing up, a blank screen will appear with a toolbar on the right.

3. Click on the Settings icon and, under the Basic Info tab, choose a portrait image. Enter the title "S.O.S. My Computer is Under Attack!" and type "Computer threats on the Internet" (Figure 9) in the description.

4. Now go to the Wallpaper tab and choose Wood.

5. In the Layout tab, select Freeform.

6. Double-click on the wallpaper on the screen to start publishing entries. As the title of your first entry, type "Viruses and Trojans" and copy the information from the "Learn" section of this unit about viruses and Trojans (Figure 10). Click on the camera icon and upload the image Unit02_P4_Virus.jpg from the virtual CD.

7. Repeat the process with the information and images on spyware and hackers.

8. Now create another entry to include a video on Internet security. Type "Security Videos" as the title of this entry and enter the description "Viruses". Click on the video camera icon and paste the address of the video that you will find in the text file Unit02_P4_Security_videos_addresses of the virtual CD.

9. Repeat these steps to insert the spyware video.

10. Click on the Address tab and change the address of your padlet. Type "computersecurity" as the address (Figure 11). Open a new tab in the browser and type in the full address to view the result

11. Select Share / Export from the toolbar (Figure 8). You have several options here, including emailing the padlet to somebody, inserting it on a website and exporting it as a PDF file.

12. Choose the Mobilize option and copy the QR code. Scan the code with a code reader to see the result. Paste it into a text processor and save the document as Unit02_P4_namesurname.

Scan this QR code with your mobile phone to see how your practical should look:

# data[].attributes.body
Our computer communicates with other computers following a common set of rules called a protocol.The packets of information follow the TCP/IP protocol (transfer control protocol/Internet protocol).Servers use the HTTP protocol (hypertext transfer protocol) to send and receive documents over the Internet.

| The DNS server sends the request to the server that hosts the web page we want to visit. The server sends us the information packets that make up the web page, which travel over the network along the quickest path that they can find.

Finally, the packets reach our computer and are reassembled. The page is then displayed in our browser.

# data[].attributes.body
Practical 3. Stop cyberbullying. Let’s use Prezi!

You must have permission from your parents or legal guardians to do this practical.

We are going to create a presentation using Prezi called "Stop cyberbullying". Prezi is an online tool for creating presentations. The only requirement is for you to register.

1. Go to https://prezi.com and click on the Get started button. Sign up for Prezi Public (the free option). Once you are in the main screen, select Create your first Prezi.

2. Choose a similar template to the one in Figure 5 (called "Explain a Topic") and click on Use template. This opens the desktop with a template containing instructions on how to use Prezi.

3. Click on the desktop to add a title in the space indicated and type "Stop cyberbullying". You will see that the title is marked with a 1.

4. Each slide is a point on the desktop. Click on the first slide after the title, marked with a 2, and write: "Cyberbullying is a type of harassment that uses threats, blackmail, etc., between peers on the Internet, mobile phones or video games".

5. Put the word cyberbullying in bold by pressing the button marked B on the formatting bar.

6. Let's insert a picture. To do this, drop down Insert and choose Image. Choose an image from the Internet that looks similar to the one in Figure 6.

7. Add different images or text to each slide until you have filled in all the ones that appear by default in the template. Your presentation should contain information on the following points, which you should develop:

The Jokin case (2004)

The serious consequences of cyberbullying and its high prevalence

How difficult cyberbullying is to detect

1. Insert the cyberbullying video from the http://pantallasamigas.net website by copying the link.

2. The last slide should contain the following text: "Put a stop to cyberbullying. If you are being bullied, let people know. If you see somebody else being bullied, let people know. We need your solidarity".

3. In this last step, we will define the path or order that we want Prezi to use to display the objects or slides on the desktop. Click on Edit path (bottom left) and move the numbered paths to put them in the correct order.

4. View your presentation by clicking on Present.

5. Save your presentation, leave the editing window by clicking on Exit and, without leaving Prezi, click on Download to save a copy to your local folder with the name Unit02_P3_namesurname.zip.

Fig. 5

Fig. 6

# data[].attributes.body
Besides the software that we can use, our best protection is ourselves and the adults we trust: parents, teachers and experts. As we saw above, our attitude is the best protection. We must be digitally responsible.

When we use Internet tools, we need to keep in mind our own safety and respect for others.
The law is here to protect us. Examples include:

The Civil Protection of Honour Act

The Data Protection Act

# data[].attributes.body
2. Personal safety and machine security

The Internet is a form of communication with many advantages but it also has its risks: it is a world of information that we have to deal with safely. A computer is not a harmless tool.

We can classify the risks of the Internet as:

Threats to the machine, i.e. our computer.

Threats to individuals, the most important type of risk. Damage to machines is only material damage but when people are hurt, it stays with them and affects other aspects of their lives.

# data[].attributes.body
In the computer room

Practical 3. Stop cyberbullying. Let’s use Prezi!

You must have permission from your parents or legal guardians to do this practical.

We are going to create a presentation using Prezi called "Stop cyberbullying". Prezi is an online tool for creating presentations. The only requirement is for you to register.

1. Go to https://prezi.com and click on the Get started button. Sign up for Prezi Public (the free option). Once you are in the main screen, select Create your first Prezi.

2. Choose a similar template to the one in Figure 5 (called "Explain a Topic") and click on Use template. This opens the desktop with a template containing instructions on how to use Prezi.

3. Click on the desktop to add a title in the space indicated and type "Stop cyberbullying". You will see that the title is marked with a 1.

4. Each slide is a point on the desktop. Click on the first slide after the title, marked with a 2, and write: "Cyberbullying is a type of harassment that uses threats, blackmail, etc., between peers on the Internet, mobile phones or video games".

5. Put the word cyberbullying in bold by pressing the button marked B on the formatting bar.

6. Let's insert a picture. To do this, drop down Insert and choose Image. Choose an image from the Internet that looks similar to the one in Figure 6.

7. Add different images or text to each slide until you have filled in all the ones that appear by default in the template. Your presentation should contain information on the following points, which you should develop:

The Jokin case (2004)

The serious consequences of cyberbullying and its high prevalence

How difficult cyberbullying is to detect

1. Insert the cyberbullying video from the http://pantallasamigas.net website by copying the link.

2. The last slide should contain the following text: "Put a stop to cyberbullying. If you are being bullied, let people know. If you see somebody else being bullied, let people know. We need your solidarity".

3. In this last step, we will define the path or order that we want Prezi to use to display the objects or slides on the desktop. Click on Edit path (bottom left) and move the numbered paths to put them in the correct order.

4. View your presentation by clicking on Present.

5. Save your presentation, leave the editing window by clicking on Exit and, without leaving Prezi, click on Download to save a copy to your local folder with the name Unit02_P3_namesurname.zip

# data[].attributes.headline
Rodrigo Baeza Practical 1. Your digital footprint You can do Practical 1 by following the book or by listening to the instructions.Everything you do on the Internet leaves a trace, a digital footprint that talks about you. This information is your digital identity and it is your duty to take care of it. You are protected by the law in this.Exercise 1. Find out your Internet IPAs we have seen, every time we connect to the Internet we are identified by a unique address assigned to our computer, called an IP address. We will now see how easy it is to find out our assigned IP.Open your browser and go to www.google.es. Type “Find out my public IP in the search box.Click on any link, look up the IP address you are browsing with and write it down (it will look like the one in Figure 1).Repeat the operation by clicking on another link and check that it detects the same IP.

# data[].attributes.subject
Rodrigo Baeza Practical 1. Your digital footprint You can do Practical 1 by following the book or by listening to the instructions.Everything you do on the Internet leaves a trace, a digital footprint that talks about you. This information is your digital identity and it is your duty to take care of it. You are protected by the law in this.Exercise 1. Find out your Internet IPAs we have seen, every time we connect to the Internet we are identified by a unique address assigned to our computer, called an IP address. We will now see how easy it is to find out our assigned IP.Open your browser and go to www.google.es. Type “Find out my public IP in the search box.Click on any link, look up the IP address you are browsing with and write it down (it will look like the one in Figure 1).Repeat the operation by clicking on another link and check that it detects the same IP.

# data[].attributes.body
Isabel Yenes
5-Think before you publish photos or videos of yourself; if you decide to do it, only publish things that will not damage your current or future image and publish them in places with restricted access and with the permission of your parents. Remember not to post pictures of anybody without their consent. Be respectful to others.

6-Keep up to date with technology and limit how long you spend on the Internet.

7-Make sure that you are of the minimum age required to enter a site. You will find this age in the terms of use of the site. You must read these terms before clicking on “I agree. If you do not read them, you may be allowing the site owners to use your data, pictures, etc.

8-Inform yourself about sites. On some sites you cannot “unsubscribe so we must be careful about what we post on them; we can sometimes give away our data forever.

In short: use common sense and do not do things on a computer that you would not do in everyday life.

# data[].attributes.body
The Internet of Things is a revolutionary concept that describes the connection of everyday objects to the Internet so that we can interact with them.

Internet basics

To understand how the Internet works, we need to be familiar with some basic concepts:We can access information on the Internet with the help of two basic elements: the browser and the search engine.

A browser is a programme that displays the content of web pages.

For example: Internet Explorer, Google Chrome, Mozilla Firefox, Safari, Opera, etc.

# data[].attributes.body
You must have permission from your parents or legal guardians to do this practical.

In this practical, you are going to create an animated presentation with PowToon to explain to your colleagues how to protect themselves when they browse the Internet or use a mobile phone.

1.         Go to www.powtoon.com. Go to the Create option and click on Start from Scratch (Figure 13). You must register and create an account first, or you can use your Gmail account.

2.         Once inside the application, choose one of the themes or templates. Choose Picto and click on Go. An empty slide will appear on the PowToon desktop. In Characters, in the menu on the right, choose the Stand image of the girl and drag and drop it to the slide.

3.         Now, in the Props category, click on More and select the image of a speech bubble. You are going to add some text to this. Drag it next to the image of the girl and adjust the size to her by positioning the cursor on the edges of the speech bubble. Select Flip from the left panel to show the speech bubble in mirror view (Figure 14).

4.         On the right, select Text. A dialogue box will appear so that you can write on the slide. Type "Protect yourself on the Internet". Select text size 22 and adjust the text box so that it fills the whole speech bubble (Figure 15).

5.         Below the slide you will see the timeline and the elements of the slide (Figure 16). Increase the timeline to 16 seconds with the + sign. Select the image of the girl. Some arrows will appear. Move the first arrow to 0.5 seconds and the last one to 2 seconds. For the speech bubble, move the first arrow to 1 second and the last one to 2. Do the same with the text.

6.         Drag the Presenting figure from the animation menu on the right to the slide. Adjust the timelines and position the first one at 2.5 seconds and the second at 11.5 seconds. From the menu on the left, choose the enter and exit effects, such as Fade (Figure 17).

7.         Go to the Text category and type the text shown in Figure 18. In the text effects icon, select Plain Text. Adjust the timelines between 3 and 11 seconds. Select Fade as the enter and exit effects.

8.         Select Text again and type "On the Internet, use your common sense". Select size 36. Choose Hand Writing in the text effects icon and set the time from 12 to 16 seconds (Figure 19).

9.       Watch the presentation by clicking on the Preview icon (Figure 20).

10.      Save the file with the title Protect Yourself on the Internet.

You can complete this practical with activities 2 and 3 of the "Internet Activities" section of this unit. Scan the following QR with a code reader to see an example of the final result:

Challenges

Challenge 1. Add sound to your presentation. Choose one you like from the options in PowToon and see what happens.

# data[].attributes.body
In this practical, you are going to create an animated presentation with PowToon to explain to your colleagues how to protect themselves when they browse the Internet or use a mobile phone.

1. Go to www.powtoon.com. Go to the Create option and click on Start from Scratch (Figure 13). You must register and create an account first, or you can use your Gmail account.

2. Once inside the application, choose one of the themes or templates. Choose Picto and click on Go. An empty slide will appear on the PowToon desktop. In Characters, in the menu on the right, choose the Stand image of the girl and drag and drop it to the slide.

3. Now, in the Props category, click on More and select the image of a speech bubble. You are going to add some text to this. Drag it next to the image of the girl and adjust the size to her by positioning the cursor on the edges of the speech bubble. Select Flip from the left panel to show the speech bubble in mirror view (Figure 14).

4. On the right, select Text. A dialogue box will appear so that you can write on the slide. Type "Protect yourself on the Internet". Select text size 22 and adjust the text box so that it fills the whole speech bubble (Figure 15).

5. Below the slide you will see the timeline and the elements of the slide (Figure 16). Increase the timeline to 16 seconds with the + sign. Select the image of the girl. Some arrows will appear. Move the first arrow to 0.5 seconds and the last one to 2 seconds. For the speech bubble, move the first arrow to 1 second and the last one to 2. Do the same with the text.

6. Drag the Presenting figure from the animation menu on the right to the slide. Adjust the timelines and position the first one at 2.5 seconds and the second at 11.5 seconds. From the menu on the left, choose the enter and exit effects, such as Fade (Figure 17).

7. Go to the Text category and type the text shown in Figure 18. In the text effects icon, select Plain Text. Adjust the timelines between 3 and 11 seconds. Select Fade as the enter and exit effects.

8. Select Text again and type "On the Internet, use your common sense". Select size 36. Choose Hand Writing in the text effects icon and set the time from 12 to 16 seconds (Figure 19).

9. Watch the presentation by clicking on the Preview icon (Figure 20).

10. Save the file with the title Protect Yourself on the Internet.

You can complete this practical with activities 2 and 3 of the "Internet Activities" section of this unit. Scan the following QR with a code reader to see an example of the final result:

ChallengesChallenge 1. Add sound to your presentation. Choose one you like from the options in PowToon and see what happens.

# data[].attributes.body
KEYWORDS

Make sure you understand these words before moving on!

·         Internet: a network of thousands of computers and devices around the world connected by copperwires, fibre optics, wireless connections and other methods.

·         Browser: a programme that displays the content of web pages.

·         Search engine: a computer system that indexes files stored on websites.

·         Server: a computer with special features, prepared to provide uninterrupted services simultaneously to lots of users.

·         Router: a device that lets us connect to the Internet.

·         IP address: a series of numbers separated by full stops that identifies a computer.

# data[].attributes.body
· A search engine is a computer system that indexes files stored on websites. Search engines keep their results up to date by continually crawling the Internet.

For example: Google, Bing, Yahoo!, etc.

·  We type the full address of a web page in the browser. This address is also called the uniform resource locator (URL) and is unique for each web page.
For example: www.google.es, www.rae.es, etc.

·  A server is a computer with special features, prepared to provide uninterrupted services simultaneously to lots of users.

# data[].attributes.body
KEYWORDS

Make sure you understand these words before moving on!

·         Firewall: defence system that controls and filters the incoming and outgoing traffic of a network through computer ports.

·         Black hacker: computer expert who attempts to bypass Internet security systems to make money from it.

·         Phishing: computer crime that uses trickery to obtain information about a user and use it fraudulently.

·         Spyware: software that tries to obtain data from users.

·         Virus: program that installs itself on a computer without the user's permission for the purpose of causing damage.

# data[].attributes.body
1. How does the Internet work?

The advent of the Internet can be seen as the beginning of one of the most important developments of the twentieth century. It emerged between 1965 and 1969 as part of the ARPA project of the United States Department of Defense. Since then, it has developed continuously into an essential service that we can access from anywhere using our mobile phones, tablets and personal computers.