Check out these fun links!
National Geographic for Kids http://www.nationalgeographic.com/kids/
Smithsonian National Zoo http://nationalzoo.si.edu/Animals/WebCams/
Magic School Bus Scholastic Kids http://www.scholastic.com/MagicSchoolBus/
Graph Maker http://nces.ed.gov/nceskids/createagraph/
Virtual Frog Dissection http://www.mhhe.com/biosci/genbio/virtual_labs/BL_16/BL_16.html
Forensic Science/CSI: Art of Crime Detection http://eduweb.com/portfolio/artofcrimedetection/