TechTayari

D5 · Digital Foundations · Grade 4–6 · ages 9–11

What is the Internet?

The big network

Going furtherFree · works offline

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The full lesson adds narration, an interactive mission and a 10-question bank, and the quiz explains any mistakes.

A network of computers

The internet is millions of computers all over the world joined together so they can share information. When you open a website or send a WhatsApp, you are using the internet.

How your phone connects

Your phone or computer joins the internet through Wi-Fi (at home or school) or mobile data from a network like Safaricom or Airtel. That connects you to the ISP — the company that gives internet.

Messages travel in pieces

Your message is broken into small pieces called packets, like sending a long letter in several envelopes. They travel separately and join up again at the other end. Fast!

Websites live on servers

A website is kept on a powerful computer called a server that is always on. When you visit tingg.africa or a school site, your phone asks that server for the page.

The padlock means safe

When you see https and a padlock in the address bar, your connection is encrypted — scrambled so others can't read it. Look for the padlock before typing a password or paying.

Key points

  • The internet is millions of computers joined together to share information.
  • Your phone joins through Wi-Fi or mobile data from Safaricom or Airtel.
  • That connects you to your ISP — the company that provides internet.
  • Your message travels as small pieces called packets.
  • Websites live on always-on computers called servers.
  • When you visit a site, your phone asks that server for the page.
  • See https and a padlock? That means your connection is safe. Always check.

Try it for real: Internet explorer

  • Ask a grown-up: does your home/school use Wi-Fi or mobile data? Which network?
  • Open a website and look at the address bar — find the padlock and the https.
  • Name one thing you do that needs the internet, and one that does not.
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