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Key Point: 1 byte = 8 bits
Definition: The Internet is a very big network that connects computers, tablets, phones and other devices all around the world so they can share information. Think of it as many roads that connect many towns — devices travel along these roads to send and receive information.
How it works (in simple words):strong
Everyday uses: People use the Internet to learn (watch lessons, read articles), play games, watch videos, send messages or video call family and friends, and find information quickly.
Simple example or story: If you want to watch a cartoon, your tablet sends a request over the Internet to a server that has the cartoon. The server sends the cartoon back and it plays on your tablet — just like ordering a book from a library and the librarian giving it to you.
Safety rules (important): Always ask a parent or teacher before sharing your name, school, photo or address online. Only visit websites adults say are ok and tell an adult if you see something that makes you uncomfortable.
Key Point: Data downloaded = Download speed × Time used (simple relation to show more speed or more time gives more data).
The Internet is a network that connects computers and devices all over the world. It helps us do many useful things quickly. Here are common uses of the Internet explained in simple words:
Always use the Internet safely: ask a parent or teacher before visiting new websites, never share personal details alone, and only use age-appropriate apps and sites.
Key Point: Internet speed (simple) = Data size ÷ Time. Example: If a 100 MB video downloads in 20 seconds, speed = 100 MB ÷ 20 s = 5 MB/s.
What are devices to access the Internet?
Devices to access the Internet are electronic tools we use to go online. They let us send messages, watch videos, read information and play games by connecting to the World Wide Web.
Common devices (simple explanation):
How devices connect (easy steps):
Simple connection picture (visual idea):
Device (phone/tablet/computer) → Wi‑Fi/ Cable → Router/Modem → ISP → Internet (cloud)
Safety note for Class 3: Always use the internet with an adult's permission, and do not share personal information like home address, school name, phone number or passwords.
Key Point: WWW ⊂ Internet (The World Wide Web is a part of the Internet.)
Internet is a huge network that connects millions of computers and devices all over the world. It is like a system of roads and cables that lets computers talk to each other. The Internet gives many services such as email, online games, video calls, and the World Wide Web.
World Wide Web (WWW) is one of the services that runs on the Internet. It is a collection of web pages and websites that you can open using a web browser (for example, Chrome or Firefox). Web pages use text, pictures, and links so you can read information and visit different pages.
Simple difference:
How they work together: When you open a web browser and type a website address, your computer uses the Internet (the network) to send a request to the computer that has that website. That computer sends the web page back, and the browser shows it to you. So the WWW needs the Internet to work, but the Internet also works for other things (like email and games) that are not part of the WWW.
Classroom-friendly analogy: Think of the Internet as a system of roads connecting cities. The WWW is like shops and libraries in those cities that you visit. You need the roads (Internet) to get to the shops (WWW).
Key Point: URL (web address) structure: protocol://domain/path — example: https://www.example.com/page1
What is a Web Browser?
A web browser is a program on a computer, tablet or phone that helps you open and see web pages on the internet. It is like a window that shows web pages, pictures, videos and games from websites.
How a Web Browser works (simple):
Main parts of a browser (what you see):
Why we use a browser: To search for information, watch videos, play educational games, do online lessons and visit safe websites recommended by teachers or parents.
Safety tips for young learners: Always ask a parent or teacher before visiting new sites, do not share personal information, and close any page that makes you uncomfortable.
Key Point: Search Query = Keywords (+ optional question words)
What is a search engine?
A search engine is a tool on the internet that helps you find information. You type words (called keywords) into a search box and the search engine looks through many web pages and shows a list of matches. The list you see is called search results.
How it works (simple):
Real-life idea: A search engine is like asking a librarian or using the index of a book to find what you need quickly.
Tips for good searching:
What you might see in results:
Key Point: Website = collection of web pages (Website → many Web Pages)
Website: A website is a group of related web pages that belong together. Think of a website as a book — the whole book is the website.
Web Page: A web page is one page in that book. It can show text, pictures, videos and buttons. The first page you see on a website is called the home page.
Hyperlink (Link): A hyperlink is a special word, picture or button you can click to go to another web page or website. Links are often underlined and blue before you click them, and purple after you click them.
Simple classroom example: Your school’s website may have pages like "Home", "About Us", "Class 3", "Gallery". Each is a web page. The menu items are hyperlinks that let you jump from one page to another.
Safety tip for children: Always ask a parent or teacher before clicking links you don’t know and never share personal information on web pages.
Key Point: Email address format: local-part@domain (example: username@domain.com)
What is an email? An email (electronic mail) is a message you send or receive using the Internet. It is like a letter, but it travels instantly from one computer or device to another.
Why use email? Email is quick, cheap, and good for sending text, pictures, and documents. Children might use it to send homework to a teacher, share a drawing with a friend, or get updates from school.
Parts of an email
How to send an email (simple steps)
Good manners (email etiquette)
Safety tips
These simple ideas help you use email correctly and safely.
Key Point: Download time (seconds) = File size (MB) ÷ Download speed (MB/s).
What is multimedia? Multimedia means using more than one type of content together — for example, text, images, sound, animation and video. On the Internet, multimedia makes websites and apps interesting and helps us learn, play and talk to others.
Types of multimedia you see on the Internet
How multimedia reaches you
Why multimedia is useful
Safety and good manners
Key Point: Speed = File size / Time (e.g., Mbps = megabits ÷ seconds)
What are Downloads and Uploads?
Downloads and uploads are two kinds of data movement between your device (computer, tablet or phone) and the internet.
How they work (simple steps)
Things you see while downloading or uploading
Important words
Safety tips
Key Point: STOP rule: S = Stop, T = Think, O = Only trusted, P = Please tell an adult.
Online safety means staying safe and smart while using the Internet, apps or games. Even though the Internet helps us learn and play, some things on it can be unsafe. Children should follow simple rules to protect themselves, their family and their personal information.
Important rules (with short explanations):
These rules keep learning and playing online fun and safe. Practicing them every day helps you build good habits.
Key Point: Think + Ask + Verify = Safer Sharing (Stop and think, ask an adult, check if information is needed)
Privacy, parental controls and safe sites help children use the Internet without harm. Privacy means keeping personal information private so that strangers cannot misuse it. Personal information includes full name, home address, phone number, school name, passwords and photos that identify you.
Parental controls are tools parents or teachers use to limit what children can see or do online. These controls can block unsuitable websites, set time limits, and control which apps or videos can be opened. Devices, web browsers and some websites have built‑in parental controls or kid modes.
Safe sites are websites made for children or that follow safety rules: they do not show violent or adult content, they protect a child’s information, and they ask for parental permission before collecting details. Children should use trusted, recommended sites and ask an adult if they are unsure.
Teaching privacy and using parental controls together keeps the Internet a safe, fun place to learn and play.
Key Point: Think Before You Click = Pause + Read + Ask an Adult
Netiquette means good manners to follow when we use the Internet. It helps everyone feel safe and happy online. Netiquette and responsible use teach children to be polite, careful and kind when using computers, tablets and phones.
Following netiquette keeps you and others safe. It also makes the Internet a nicer place to learn and have fun.
Key Point: STOP = Screenshot + Tell an adult + Omit reply (do not respond) + Preserve evidence
What is cyberbullying? Cyberbullying is when someone uses the internet, chat, social media, games or messages to be mean, hurtful or to spread lies about another person. It can be nasty messages, leaving someone out on purpose, making fake profiles, or sharing private photos without permission.
Why it is wrong: Cyberbullying can make a child feel sad, scared or alone. It can happen anytime, so it is important to know how to stay safe and what to do.
How to stay safe:
What to do if you are bullied online (easy steps):
Reporting helps: Reporting tells the website or game that someone is breaking the rules. The site can remove hurtful content or stop the person from using the account. You should not feel ashamed — telling an adult is the right thing to do.
Key Point: Good Resource = Reliable Source + Age-appropriate Content + Clear Instructions
Educational internet resources are websites, apps, videos and online tools that help children learn new things using a computer, tablet or phone. For Class 3 pupils these resources include interactive lessons, storybooks, learning games, videos and virtual tours that make learning fun and easy.
Common types of resources:
Why they are useful: they show pictures and sounds, let children practise many times, give quick help and make lessons interesting. Always use age-appropriate sites and ask a teacher or parent for help to choose safe resources and to set time limits.
Simple steps to use a resource: 1) Choose a trusted site or app (by teacher/parent). 2) Pick the right grade/topic (for example: addition, reading, animals). 3) Watch or play and pause to try problems on paper. 4) Ask questions if something is not clear.