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🌐 How the Internet Works

Every click sends tiny data packets zooming around the world. Here's how!

2
lessons
~15 min
to learn
🔬 Science
subject
Ages 6–12
level
Start the course →

What you’ll learn

  1. Explain what the internet is, how it started, and how data travels in packets through routers.The internet is a network of networks that began as ARPANET in 1969. Information travels in tiny packets, and routers guide those packets to the right destination.
  2. Describe IP addresses, servers, protocols, and basic online safety.Every device has a unique IP address, and websites live on servers. Shared rules called TCP and IP let computers talk to each other. Staying safe online means protecting passwords and telling a trusted adult about anything scary.

Questions this course answers

What is the internet best described as?

The internet is a network of networks, made of many smaller networks joined together, owned by no single person.

When did the early internet, called ARPANET, begin?

ARPANET began in 1969, when scientists sent the first message between two computers.

What are the tiny chunks that information is broken into called?

Information travels in small chunks called packets, which are reassembled at the destination.

What is an IP address like?

An IP address is a unique number that works like a street address so packets reach the right device.

Where are websites and videos stored?

Websites, videos, and games are stored on powerful computers called servers that answer requests.

What should you do if something online makes you feel scared?

If something online worries or scares you, telling a trusted adult is the safe and smart thing to do.

Grounded in trusted sources

  • ARPANET - Wikipedia (en.wikipedia.org/wiki/ARPANET)
  • From ARPANET to the Internet | Science Museum (sciencemuseum.org.uk/objects-and-stories/arpanet-internet)
  • Internet Protocol facts for kids - Kiddle (kids.kiddle.co/Internet_Protocol)
  • ARPANET - Packet Data, Networking, Internet | Britannica (britannica.com/topic/ARPANET)

Every Wunder lesson is built from real, reputable sources — never invented.

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