What is the internet?
An easy way to explain the internet is to think of your school computers all linked together into a network that you can put information into and get information out that you and other people in your school have put in.
Now imagine that a friend from another school wants to use your information and give you some of hers. You both connect your computers to modems that allow your computers to share information.
Other networks can connect to yours and to other networks. This is called inter-networking or the internet as it became known.
It is a way of sending information from one computer to another anywhere in the world using phones or satellites, radio links and a lot of other ways.