(Sample link) White House for Kids http://www.whitehouse.gov/kids/whlife/index.html
(Sample link) National Geographic for Kids http://www.nationalgeographic.com/kids/
NASA for Kids http://kids.mtpe.hq.nasa.gov/
Physical and Chemical Changes http://mypage.direct.ca/k/kasmith/gina/
Chem for Kids: Matter http://www.chem4kids.com/files/matter_intro.html
Savage Earth http://www.pbs.org/wnet/savageearth/
Discovery Kids http://kids.discovery.com/?clik=www_nav_kids
Strange Matter http://www.strangematterexhibit.com/
National Security Agency for Kids (learn how to be a code breaker...) http://www.nsa.gov/kids/
The National Zoo http://nationalzoo.si.edu/default.cfm
NOAA for Kids http://www.education.noaa.gov/students.html
Bill Nye the Science Guy http://billnye.com/core.html?flashtarget=core.html&noflashtarget=noflash.html
How Stuff Works Website http://www.howstuffworks.com
Your Weight on Other Worlds http://www.exploratorium.edu/ronh/weight/index.html
Interactive Periodic Table of Elements http://www.dreamwv.com/primer/page/s_pertab.html
Explanation of the Periodic Table of Elements http://www.chem4kids.com/files/elem_intro.html
It's My Life: Smoking http://pbskids.org/itsmylife/body/smoking/index.html
Density of Common Materials http://www.mcelwee.net/html/densities_of_various_materials.html
Plant Cell and Animal Cell Diagrams http://waynesword.palomar.edu/lmexer1a.htm
Bacteria Cells http://micro.magnet.fsu.edu/cells/bacteriacell.html
Virus Structure http://micro.magnet.fsu.edu/cells/virus.html
Cells Alive http://www.cellsalive.com/
Cells Hangman http://www.superkids.com/aweb/tools/words/hangman/cells.shtml
Microorganisms http://www.biology4kids.com/files/micro_main.html
Microorganism Interactive Video http://www.bbc.co.uk/schools/scienceclips/ages/10_11/micro_organisms.shtml
Food and Drug Administration (Bacteria and Viruses) http://vm.cfsan.fda.gov/~mow/intro.html
Background on Viruses, Bacteria, Fungi, and Protozoa http://library.thinkquest.org/26644/us/index.htm
Great Photos of Viruses and Bacterium http://library.thinkquest.org/CR0212089/micr.htm
Bacteria - National Geographic http://www.nationalgeographic.com/ngkids/0010/bacteria/
Germs! http://www.kidshealth.org/kid/talk/qa/germs.html
Microbe Zoo! http://commtechlab.msu.edu/sites/dlc-me/zoo/zdmain.html
Fighting Bac! http://www.fooddetectives.org/
Classification of Living Things http://anthro.palomar.edu/animal/default.htm
Animal Classification http://web.archive.org/web/20040408150714/education.leeds.ac.uk/~kh/technolo/ebp97/forest/classani.htm
Classifying Critters http://www.hhmi.org/coolscience/critters/critter2.html
Classification - The Franklin Institute http://www.fi.edu/tfi/units/life/classify/classify.html
Genetics http://ology.amnh.org/genetics/geneticjourney/index.html
Atoms http://www.ndt-ed.org/EducationResources/HighSchool/Electricity/atommodels.htm
It's My Life! http://pbskids.org/itsmylife/body/offline_activities.html