It is quicker than handwriting and you don’t need to sharpen your pencil. If you learn how to touch type, you can see it is much faster.
It is much more easier to type than to write. My example would be when you are writing with a pencil and made a mistake and will need a eraser. But on a Netbook you could just press the backspace button and it would be gone like that.
When you are bored and want to have some fun, you could play some games or music on the Netbook. My example is to do it when times are appropriate and in your Netbook.
Finally the Netbook is a good use for school children because your documents can instantly be seen by the teacher on Google Docs once you “file” it. My example is to file a document once you created it.
That's why I strongly believe that the Netbook is a good learning tool because it gives you access to the Internet.