Merriam-Webster Online
http://www.m-w.com/

Dictionary.com
http://dictionary.reference.com/

OneLook Dictionary
http://www.onelook.com/

Merriam-Webster Online
http://www.m-w.com/

Bartleby
http://www.bartleby.com/62/

Information Please
http://www.infoplease.com/encyclopedia/

Encarta
http://encarta.msn.com/

Conversions
http://www.infoplease.com/pages/unitconversion.html
Convert between units or length, area, volume, weight, mass, temperature, cooking and time.

AltaVista
http://www.altavista.com/

Answers.com
http://www.answers.com/ 

Ask.com
http://www.ask.com 

Citation Machine
http://citationmachine.net/
Type in reference information and the citation machine will format citations in MLA or APA format.

Language Arts
Magnetic Poetry
http://www.magneticpoetry.com/kidspoetry/play...
Drag themed words onto the screen to create poems which you can submit to be published.

Read Write Think
http://readwritethink.org/student_mat/index.asp
Online activities such as flip books, acrostic poems, and puzzles for K-12 students that support literacy.

Bartleby
http://www.bartleby.com/
Contemporary and classic reference works on the web.

Paradigm Online Writing Assistance
http://www.powa.org/
All the help you’ll need to help organize and write a paper.

Ohio University: Access to Literature and Authors
http://wiredforbooks.org
Access to literature and authors.

Math Electronic Examples
http://standards.nctm.org/document/eexamples/
Tutorials on various high school math topics.

National Library of Virtual Manipulatives
http://nlvm.usu.edu/en/nav/vlibrary.html
Interactive, web-based manipulatives for mathematics instruction

Math Web Tools
http://illuminations.nctm.org/tools/index.aspx
Interactive demonstrations of various math concepts.

Cut the Knot
http://www.cut-the-knot.org/index.shtml
Interactive math and logic puzzles.

Math DL
http://www.mathdl.org/jsp/index.jsp
Mathematical sciences digital library.

High School Math Problem Achieve
http://math.smsu.edu/~les/Past.html
Over 90 math problems with solutions.

Mars Rover
http://marsrovers.jpl.nasa.gov/home/index.html
Learn about NASA’s robotic exploration of Mars.

Return to Flight
http://www.nasa.gov/externalflash/rtf_flash/...
Flash interactive site explaining NASAs space shuttle program.

Scholastic Science Interactive
http://teacher.scholastic.com/activities/science/
Interactive science activities broken down by topic.

National Geographic: Forces of Nature
http://www.nationalgeographic.com/forcesofnature/
Experience the Forces of Nature in this simulation by selecting conditions that cause tornados, volcanoes, and earthquakes.

Terrafly
http://terrafly.fiu.edu/
Interactive website allowing users to input address and zoom in and out of real satellite photos.

EdHeads
http://www.edheads.org/index.htm
Simulations for knee surgery, weather, and simple machines.

InfoNation
http://cyberschoolbus.un.org/infonation3/basic.asp
Create bar graphs to view and compare statistical data on countries around the world.

Library of Congress: WiseGuide
http://www.loc.gov/wiseguide/indexflash.html
Published monthly, this site highlights the many fascinating, educational and useful resources available from the nation's library.

History Detectives
http://www.pbs.org/opb/historydetectives/
Explore the complexities of historical mysteries, searching out the facts, myths and conundrums that connect local folklore, family legends and interesting objects.

Experiencing War
http://www.loc.gov/vets/stories/voicesofwar/
Stories from the Veterans History Project.

National Geographic: Expeditions
http://www.nationalgeographic.com/xpeditions/hall/
Interactive “museum” that takes you on geography journeys.

American Experiences Archive
http://www.pbs.org/wgbh/amex/archives_theme...
Stories of the people and events that shaped this country.

Eyewitness to History
http://www.eyewitnesstohistory.com/
Your ringside seat to history - from the Ancient World to the present.

History Matters
http://historymatters.gmu.edu/
A gateway to internet resources on American history.

Country Reports
http://www.countryreports.org/
Statistics on 260 countries.