New to all of this? Start here. These are the friendliest first lessons for anyone meeting the web, computers, and online life, no background needed. Each one answers a single everyday question in plain language, so kids, parents, and teachers can build a foundation together before moving on to bigger topics.
Welcome to Robot Explains
A friendly tour of the site and how the web works. Start here!
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What Is Technology?
Tools people make to help solve problems and do things more easily.
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What Is the Internet?
The giant network that connects computers all around the world.
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What Is the Web?
URLs, HTTP, and domain names, the basics of how the web works.
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How Web Pages Work
What really happens when you open a website.
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What Is a Browser?
The app that shows you web pages, like Chrome or Safari.
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🧪 Interactive
What Is a URL?
The address that points to a page on the web.
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🧪 Interactive
What Is DNS?
The internet's address book: it finds a site by its name.
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What Is HTTP?
The language browsers and servers use to talk.
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🧪 Interactive
What Is HTTPS?
The secure version of HTTP that keeps your connection private.
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What Is a Padlock Icon?
The little lock that shows a website is using a safer connection.
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What Is a Security Certificate?
A website's digital ID card that helps prove who it is.
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What Is STEM?
STEM is a team of four big idea areas: Science, Technology, Engineering, and Math.
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