Smithsonian Institution
Smithsonian Learning Lab: Under the Spell Of...spiders!
Learn about their unique characteristics, how they hunt, and reproduce. Young scholars will appreciate the excellent photographs and background information. Teachers will love the series of three lesson plans about spiders, complete with...
University of California
Ucmp: Araneae Spiders
A site from UC Berkely on the araneae class, the true spiders.