NASA for middle-school students http://www.nasa.gov/audience/forstudents/5-8/features/index.html
National Geographic http://www.nationalgeographic.com
Life Science Textbook Online student textbook used in 7th grade science You must have a user name and password in order to login. http://www.pearsonsuccess.net
New Scientist Magazine http://newscientist.com/home.ns
Biology for Kids http://www.biology4kids.com
Mad Scientist http://www.madsci.org
Earth and Sky http://www.earthsky.org
Science News for Kids http://www.sciencenewsforkids.org
Discover Magazine http://www.discovermagazine.com
Flying Turtle. This is an award winning site on basic energy concepts. This can be a difficult topic but this site is "way terrific" in explaining some hard material! http://www.ftexploring.com
Windows to the Universe This is a general science website. http://www.windows.ucar.edu
Wonderful animations about cells. http://www.cellsalive.com
Answers to questions you may have about science. http://www.howstuffworks.com
All about insects! http://www.insects.org
Science headlines and news every day! http://www.sciencedaily.com
Wikipedia for Schools is a site offering thousands of articles that have been checked for accuracy and appropriateness. http://schools-wikipedia.org
This website reviews how to do all kinds of math problems from reading place values to scientific notation! http://webmath.com
Unit conversion website. http://unit-conversion.info/length.html