Books - http://www.libraryloft.org/

Scholastic Books - http://www.scholastic.com/kids/stacks/index.asp

Random House Books - http://www.randomhouse.com/teens/

Newbery Medal Books http://www.ala.org/ala/alsc/awardsscholarships/literaryawds/newberymedal/newberymedal.cfm

Math dictionary - http://www.amathsdictionaryforkids.com/

Basketball Math - http://www.scienceacademy.com/BI/index.html

Math tutor - http://www.fliegler.com/mathman/

Math practice - http://math2.org/

Math in daily life - http://www.learner.org/interactives/dailymath/

Help in math - http://www.webmath.com/

Math simulations - http://www.explorelearning.com/

Math textbooks - http://my.hrw.com/ and  http://www.classzone.com/

Mad Science - http://www.madscience.org/

Cool Science - http://www.hhmi.org/coolscience/index.html

Museum of Science - http://www.mos.org/

The San Francisco Exploratorium - http://www.exploratorium.edu/

Life Science - http://www.biology4kids.com/

Cells - http://www.cellsalive.com/index.htm

Space information - http://amazing-space.stsci.edu/

Weather information - http://www.usatoday.com/weather/wteach.htm

Natural Disasters - http://www.fema.gov/kids/

Volcano information - http://volcano.oregonstate.edu/index.html

Tornado information - http://www.tornadoproject.com/

Paleontology (fossils) information - http://www.paleoportal.org/

Physics - http://www.physics4kids.com/

Chemistry - http://www.chem4kids.com/

The Atoms Family - http://www.miamisci.org/af/sln/index.html

Energy - http://www.energyquest.ca.gov/

Chronology of US Historical Documents - http://www.law.ou.edu/ushistory/index.shtml

US History - http://www.history.com/topics/ushistory

US History topics - http://www.snowcrest.net/jmike/ushist.html

US Government - http://bensguide.gpo.gov/6-8/index.html

Presidents - http://www.whitehouse.gov/history/presidents/index.html

Important people - http://www.achievement.org/

Geography Quiz- http://www.lizardpoint.com/fun/geoquiz/