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...
PBS
Pbs Nature: Spider
There are about 35,000 known species of spiders in the world and this research resource site surveys these animals in text and images.