Web 2.0 and Fun Tools
What are the latest and coolest tools out there?
Welcome to Wikibooks, a Wikimedia project that was started on July 10, 2003 with the mission to create a free collection of open-content textbooks that anyone can edit. Since our founding volunteers have written about 23,998 modules in a multitude of textbooks.

The aim of this project is to produce a series of full-color booklets for children aged 8 to 11. Here's one example:

A World of Discovery and Innovation

(Mathematics, Science and Technology)