San Diego Zoo Global
San Diego Zoo: Spiders
An in-depth description of spiders, including their classification, appearance, habitat, adaptations, reproduction, diet, and other interesting facts. [2 min, 22 sec]
PBS
Pbs Teachers: Scientific American: Spiders! Spin, Spin, Spin
Investigate the use of computers to simulate spider behaviors to learn more about how and why spiders build webs. Build a model of a web to compare your eyesight and dexterity to a spider's, then compare the elasticity and strength of...