http://en.wikipedia.org/wiki/Kite_flying

This Wikipedia detailed article covering the history of, and everything else about, kites. Suitable for Year 9 and up.

http://www.grc.nasa.gov/WWW/K-12/airplane/shortk.html

A list of all the topics available on NASA's site from the Beginner's Guide to Kites site. Clicking on the title will deliver a page with a slide and a scientific explanation of the contents. If the number and variety of pages seems too intimidating, consider taking one of the Guided Tours through the web site. More suitable for secondary students.

http://www.kitehistory.com

Comprehensive site on the history of kites with an American focus. Suitable for Year 8 and up.

http://www.aka.kite.org

The American Kitefliers Association is a non-profit organization dedicated to educating the public in the art, history, technology, and practice of building and flying kites. Links to many resources including the World Kite Museum.

http://www.drachen.org

The Drachen Foundation is a non-profit educational corporation, devoted to the dissemination of knowledge about kites worldwide. It takes its name from the German drachen, which means kite or dragon. Includes a list of resources about kites, which is suitable for all levels.

http://christchurchcitylibraries.com/Maori/Kites/

Resources and links on Māori kites known as manu tukutuku or manu aute from Christchurch City Libraries. Manu is the word for bird and kite, and tukutuku refers to the winding out of the line as the kite climbs. Suitable for Year 8 and up.

http://www.skratch-pad.com/kites/fly.html

A site that explains how kites work, their history, construction and examples. Suitable for primary level.