Astroweb: Astronomy/Astrophysics on the Web  (http://www.cv.nrao.edu/fits/www/astronomy.html)
This site is a collection of pointers to astronomy-related information available on the Internet. Also has the AstroWeb database, which currently contains approximately 2,831 resource records. 

Bill Nye the Science Guy (http://www.disney.com/DisneyTelevision/BillNye/)
Inspired by the Disney children's TV show. Wonderful science site for kids. 

Biomes and Ecosystems(http://mbgnet.mobot.org/justkids.htm)
Links to the various land biomes, marine and freshwater ecosystems. And all at a level that your kids can understand. Helpful for that biome report. 

The Center for Marine Science Research at UNC Wilmington  (http://www.uncwil.edu/cmsr/newpage/links.htm)
These links contain information on oceanography, marine science, and marine biology. 

Cornell Math and Science Gateway (http://www.tc.cornell.edu/Edu/MathSciGateway/)
Maintained by the Cornell Department of Education, this site offers links to resources in math and science for educators and students in grades 9-12. Organized into broad categories like Biology and Earth & Environmental Science. 

Dave's Math Tables(http://www.sisweb.com/math/tables.htm)
A bilingual site (English & Spanish) of math reference tables including:   General Math, Algebra, Geometry, Trigonometry, Linear Algebra, Discrete Math, Statistics, Calculus, Odds and Ends, and Advanced Topics. 

The Dinosauria(http://www.ucmp.berkeley.edu/diapsids/dinosaur.html)
From Berkeley, CA, you'll find links to the dinosaur fossil record, life history, ecology, as well as special exhibits. 

Electronic Zoo (http://netvet.wustl.edu/e-zoo.htm)
A zoo on your PC! This multi-award winning site allows you to view pictures and information on animals of your choice. Also has links to veterinary medicine and animal health. 

Envirofacts Warehouse (http://www.epa.gov/enviro/)
Put that aerosol can away! Maintained by the Environmental Protection Agency, this site allows you to access overviews, reports, databases, and maps on the status of our environment. 

Environmental Sites on the Internet  (http://www.lib.kth.se/~lg/eindex.htm)
Includes hundreds of links associated with the environment. 

Exploratorium (http://www.exploratorium.edu) This on line museum features more than 500 interactive exhibits. You will also find memory tests, optical illusions, mutant fruit flies, and a perception experiment involving the Mona Lisa. There are also tips for experiments that you can do on your own.

Fizzics Fizzle:  Beginner's Guide to Physics  (http://library.advanced.org/16600/beginner/)
Provides basic knowledge about physics. 

Frank Potter's Science Gems (http://www-sci.lib.uci.edu/SEP/SEP.html)
An interesting metasite, organized by a high school teacher by school section, i.e. Physical Science I. Also includes lesson plans. 

IPL Science Fair Project Resource Guide (http://www.ipl.org/youth/projectguide/)
Offers articles, samples, and ideas that's sure to make you the star of your science fair. 

Kid's Action (Rainforests) (http://www.ran.org/ran/kids_action/index.html)
Links to life in the rainforest, native peoples, and animals of the rainforest. 

JASON Project (http://www.jasonproject.org/)
Created to let students learn about science first hand, this site allows you to keep up with the latest JASON project news. 

Marine Biology Learning Center  (http://www.marinebiology.org/onlinesciences.htm)
Find educational information on marine ecology and oceanography at the Marine Biological Learning Center's website. 

Math WWW VL:  General Resources  (http://euclid.math.fsu.edu/Science/General.html)
Developed by Florida University's Department of Mathematics, this metasite provides a wealth of information associated with mathematics. 

The Mineral Gallery(http://mineral.galleries.com/default.htm)
The Mineral Gallery represents a continuously growing collection of mineral specimens, descriptions and images.  Mineral information can be searched for by name, class, interesting groupings, or keyword. 

MTU Volcanoes Page (http://www.geo.mtu.edu/volcanoes/)
Produced by Michigan Technological University, this website provides educational and scientific information about volcanoes. 

NASA (http://www.nasa.gov/)
Home of the National Aeronautics & Space Administration. Keep up to date on the latest shuttle missions as well as NASA's cool selection of websites. 

National Geographic Online(http://www.nationalgeographic.com/)
Can't you just hear the theme song? Anyway, this site offers information about what's going on at the society, as well as changing exhibits on such varying topics as climate changes, wolves, or the Whitbread. 

The Nine Planets  (http://www.seds.org/billa/tnp/)
Detailed information on each of the nine planets and their moons. Out of this world photography. 

SciEd:  Science and Mathematics Education Resources  (http://www-hpcc.astro.washington.edu/scied/science.html)
Maintained by Alan Carris, this site has many links regarding science and mathematics arranged by topic. 

Space Telescope Science Institute(http://oposite.stsci.edu/pubinfo)
Anything you wanted to know about the Hubble Telescope can be found here, including phenomenal pictures of  the Milky Way galaxy and beyond. 

VolcanoWorld (http://volcano.und.nodak.edu/)
A fun site which offers lists of currently erupting volcanos, images of volcanos, and volcano video clips. You can even ask questions of an actual volcanologist. 

WebElements (http://www.shef.ac.uk/~chem/web-elements/)
An interactive table of elements on the web. Click on an element and get detailed information about its background, chemical data, physical data, isotopes, and much, much more. 

Yahoo! Science:  Chemistry  (http://dir.yahoo.com/Science/Chemistry/)
Yahoo! presents subject links pertaining to chemistry in this site.  <