D5 · Digital Foundations · Grade 4–6 · ages 9–11
What is the Internet?
The big network
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▶ Start the interactive lessonThe 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.