Skip to content

Chapter 3: Exploring the Internet

Finding Things — and Knowing What to Believe

The internet is like the biggest library in the world. Almost anything you’re curious about is in there somewhere.

But a real library has librarians who choose which books go on the shelves. The internet doesn’t. Anybody can put anything on it — true things, wrong things, and things made up on purpose to fool you.

So being a good explorer means learning two skills, not one. You need to know how to find things. And you need to know how to tell what you can trust.


To visit websites you use a browserbrowser: An app you use to visit websites, like Chrome, Safari, or Edge. — like Chrome, Safari, or Edge. A browser is your window onto the internet. It’s just an app, like any other, except the thing it opens is the whole web.

Devices get online with Wi-FiWi-Fi: A way to connect to the internet without wires, from a box called a router at home or school. — a way to reach the internet with no wires at all. The signal comes from a small box called a router, at home or at school.

Look for the Wi-Fi symbol — the little curved bars in the corner of your screen. If they’re there, you’re connected. If they’re missing, that’s your problem right there, and it isn’t the website’s fault.

Every browser has the same few tools, no matter which one you use:

  • The address bar — the long box across the top, where the web address goes. In most browsers you can also type a question straight into it and it will search for you.
  • Tabs — the little shapes along the very top. Each tab is a whole separate page, held open at the same time. You can keep your research in one and your notes in another, and flick between them.
  • Back — takes you to the page you were just on. Very handy when you click something and think “oops.”
  • Refresh — loads the page again from the beginning. This is the first thing to try when a page looks broken or only half loads.

Learn those four and you can get around any browser on any computer.


A web address is called a URLURL: The address of a web page, like www.example.org, typed in the address bar.. Most people look right past it. But a URL isn’t a random jumble of letters — every part of it is telling you something.

The last bit of the address is the biggest clue, because it hints at who runs the site:

  • .com — usually a business. Businesses often want to sell you something, which is worth remembering.
  • .org — usually a group or an organization.
  • .edu — a school, college, or university.
  • .gov — the government.

None of these are promises. But if you’re hunting for facts for a project, a .edu or a .gov is a very good place to start looking.

You’ll often see https at the very start of an address. That “s” stands for secure. It means the connection between you and the site is protected, so nobody in between can read it.

If a website is ever asking you for a password, look for that “s” first.

Here’s the tricky part. Some people build fake addresses that look almost right.

Look at these two:

  • roblox.com
  • rob1ox.com

Spot it? In the second one, that isn’t a letter L. It’s the number 1, dropped in because at normal reading speed your brain skips right over it. Your eyes read the shape of the word, not every letter.

That’s one of the most common tricks there is. The defense is simple and a bit boring: actually read the address before you type anything into the page or click a link.


Most people type one word into the search box and take whatever comes back. You can do much better than that, and it only takes one change.

Watch what happens with these two searches:

  • frogs — you get millions of results about anything even slightly froggy. Cartoons. Pet shops. Pictures.
  • how do frogs breathe — you get the actual answer to your actual question, usually right near the top.

The search box isn’t a filing cabinet where you look up one word. It’s more like asking a person. So ask it the real question, in your real words.

Look carefully at the top of your results. Sometimes you’ll see a small label that says Ad.

That means somebody paid to put it there. It isn’t up there because it’s the best answer — it’s up there because it has money behind it. Search engines have to label ads, so the label is always there. You just have to remember to look.

The first result isn’t automatically the best one. Before you click, take two seconds to read the little description underneath and the web address. Ask yourself: does this look like somebody who would actually know?

If your first search doesn’t work, don’t scroll forever. Change your words and search again. Trying twice with better words is much faster than scrolling through a hundred bad results.


Not everything online is true! This is the most important part of the whole chapter.

Some things online are wrong by accident. Some are wrong on purpose, because somebody wants to fool you or sell you something. Nobody sorts the internet into “true” and “false” for you — so you have to do it yourself.

Luckily there are three questions that do most of the work.

Find out who is actually behind the page. A school, a library, a museum, or a well-known news site has people whose job is to check things before they publish. A random person posting a video does not.

If you can find the same fact on three separate trustworthy sites, it’s probably solid. If only one strange website says it — and nowhere else does — be careful. That’s a warning sign, especially if the claim is surprising.

If you’re not, ask a grown-up. This isn’t giving up. Checking with somebody who knows more is exactly what real scientists and real reporters do all day long. It’s what careful people do.

Here’s a trick worth knowing. When something makes you want to shout “whoa!” and tell everyone right away — that’s exactly the moment to slow down and check it first.

Surprising things spread fastest, and that’s true whether they’re real or not.


Chapter 3 Activity: Be a Web Detective 🔍

Section titled “Chapter 3 Activity: Be a Web Detective 🔍”

Find two websites. Write each address. What does the ending (.com, .org, .edu) tell you? Does it have https?

Pick a question you’re curious about. Search it with clear words. Write down one good answer and where it came from.

Find a fact online. How could you check if it’s really true? Write down two ways.


  • I know a browser is used to visit websites
  • I know Wi-Fi connects a device to the internet
  • I can use the address bar, tabs, back, and refresh
  • I can read a web address ending like .com, .org, or .edu
  • I know the “s” in https means the site is more secure
  • I can spot a fake address that looks almost right
  • I can search using clear words and a whole question
  • I know some results are ads
  • I can check if information is true by asking who made it
  • I know AI answers can be wrong and should be double-checked