http://www.nasa.gov/

http://www.kidsites.com/sites-edu/science.htm

http://www.cellsalive.com/cells/3dcell.htm

 http://www.nationalgeographic.com/

http://www.whattablast.com/tuffstuff/science.cfm

 http://yucky.discovery.com/flash/

http://www.reekoscience.com/Experiments/

http://www.tryscience.org/

http://www.kidsolr.com/science/page11.html

http://www.sciencemaster.com/

http://www.last-word.com/

http://www.innerbody.com/

http://pbskids.org/dragonflytv/

http://www.exploratorium.edu/

http://www.sciencespot.net/Pages/kdzbio.html

 http://www.sciencekids.co.nz/gamesactivities.html

http://www.kbears.com/sciences/microscope.html

http://www.ibiblio.org/virtualcell/index.htm

 SIMPLE MACHINES:

 http://www.wonderville.ca/v1/activities/levers/levers.html

http://www.harcourtschool.com/activity/machines/simple_machines.htm

 http://www.totally3rdgrade.com/simple_machines.html

Acids & Bases:

• ACIDS AND BASES ARE EVERYWHERE
  Rader's Chem4kids.com
  http://www.chem4kids.com/files/react_acidbase.html
• Acids, Bases, and Salts
  Interactive Science
  http://www.glencoe.com/sec/science/Science600/co/617.php?iRef=617
• pH Meter
  Solutions od Acids, Bases and Salts
  http://www.chem.iastate.edu/group/Greenbowe/sections/projectfolder/flashfiles/acidbasepH/ph_meter.html
• The pH Scale
  Put the list in order by entering the numbers 1 through 14 in the fields provided.
  http://www.quia.com/rd/1975.html?AP_rand=180682650
• Properties of acids and bases with video clips:
  http://dl.clackamas.cc.or.us/ch105-05/properti.htm
• Animations of strong andweak acids with audio:
  http://www.mhhe.com/physsci/chemistry/essentialchemistry/flash/acid13.swf
• GEMS Alien Juice Bar
  http://sv.berkeley.edu/showcase/flash/juicebar.html
• Delights of Chemistry
  Chemistry Demonstrations performed at the University of Leeds. Movies, photos and text that explains our chemical reactions are
  http://www.chem.leeds.ac.uk/delights/
• ACIDS AND BASES
  http://www.chemtutor.com/acid.htm
• Reeko's Mad Scientist Lab
  Experiments
  http://www.spartechsoftware.com/reeko/MoreExperimentsSortCategory.htm#Chemistry
• The pH Factor
  http://www.miamisci.org/ph/index.html

• National Geographic: Animals
  http://animals.nationalgeographic.com/
• Animal Planet
  http://animal.discovery.com/
• Animal Diversity Web
  http://animaldiversity.ummz.umich.edu/site/index.html
• Animals.com
  http://www.animals.com/
• Enchantedlearning.com: Animals
  http://www.enchantedlearning.com/coloring/
• BBC: Animals
  http://www.bbc.co.uk/nature/animals/
• Franklin Institute
  Animals Hotlist
  http://www.fi.edu/learn/hotlists/animals.php
• Animal Games
  http://gamequarium.com/animals.html
• Animal Idol
  Use your vast knowledge of animals, plants, and biomes to become the Next Animal Idol.
  http://www.mrnussbaum.com/animalidol.htm
• Habitat Maker
  http://www.mrnussbaum.com/habitatmaker.htm
• Habitat Maker 2.0
  http://www.mrnussbaum.com/habitatmaker2.htm
• Sharks
  http://www.mrnussbaum.com/sharks.htm
• Repitiles and Amphibians
  http://www.mrnussbaum.com/reptiles.htm
• Mammals
  http://www.mrnussbaum.com/mammalsindex.htm
• Insects
  http://www.mrnussbaum.com/insectsindex.htm
• North American Birds
  http://www.mrnussbaum.com/birdsindex.htm
• Smithsonian National Zoo
  http://nationalzoo.si.edu/
• San Diego Zoo
  http://www.sandiegozoo.org/videos/index.html
• Animal Page: Sheppard Software
  http://www.sheppardsoftware.com/web_games_trivia_animal.htm
• Animal Games: Sheppard Software
  http://www.sheppardsoftware.com/content/animals/kidscorner/gamesforkids.htm

• Astronomy
  http://www.cosmos4kids.com/
• Astronomy for Kids
  http://www.frontiernet.net/~kidpower/astronomy.html
• Astronomy for Kids
  http://www.kidsastronomy.com/
• Astronomy.com - Astro for kids
  http://www.astronomy.com/asy/default.aspx?c=a&id=1091
• Center for Earth and Planetary Studies – SEARCH
  http://www.nasm.si.edu/research/ceps/search.cfm
• CosmicQuest @ The Children's Museum of Indianapolis
  http://www.childrensmuseum.org/cosmicquest/index.html
• iKnowthat.com Science Lab Games
  http://www.iknowthat.com/com/L3?Area=Science%20Lab
• NASA - Home
  http://www.nasa.gov/home/
• StarChild A Learning Center for Young Astronomers
  http://starchild.gsfc.nasa.gov/docs/StarChild/shadow/StarChild.html
• The Nine Planets
  http://www.kids.nineplanets.org/solar.htm
• SPACE TODAY ONLINE
  Covering Space From Earth to the Edge of the Universe
  http://www.spacetoday.org/
• Aerospaceguide.net
  Space Projects and Info
  http://www.aerospaceguide.net/
• Physics and Astronomy
  http://www.quiz-tree.com/Physics_and_Astronomy_main.html
• SolStation
  http://www.solstation.com/
• Planet Neptune
  http://www.planetneptune.org/
• Rochester for Kids
  Hubble Space Telescope - Greatest Photos
  http://www.rochesterforkids.com/hubble.htm
• Windows to the Universe
  http://http://www.windows.ucar.edu/
• MESSENGER
  MEcury Surface, Space ENvironment, GEochemistry, and Ranging
  http://messenger.jhuapl.edu/index.php
• Space Today: Mercury
  http://www.spacetoday.org/SolSys/Mercury/MercuryBackground.html
• The Solar Space Station
  http://www.solarspace.co.uk/index.php
• Space Games
  http://gamequarium.com/space.html
• Sciemce Online: Earth and Universe
  http://classroom.jc-schools.net/sci-units/earth.htm