• Reference sites
• Science sites
• History sites

• Math sites
• Fiction sites
• Language sites

• Educational games
• General kid sites
• Test prep sites

Reference Sites for Kids:

Almanacs (which have tons of short encyclopedia-like entries on tons of topics):

• FactMonster.com
• Infoplease.com

Indexes (which have compiled and indexed Web sites with report-relevant information):

• Kidspace @ Internet Public Library

Dictionaries (which work just like paper dictionaries -- and sometimes even pronounce words for you):

• Word Central (a kids' dictionary)
• Merriam-Webster (an adults' dictionary)

Encyclopedias (which work just like paper encyclopedias):

• Encyclopedia.com

Science sites:

General science sites:

• Exploratorium -- a wonderful site full of interesting information and interactive activities by the Exploratorium Museum in San Francisco.

Biology sites:

• Froguts.com -- fun interactive activities -- including virtual dissection.

Chemistry sites:

• PBS Atom Builder -- interactive atom builder to help you understand chemical reactions and atomic structure.
• ChemBalancer -- element quiz and online chemical equation balancer.
  

Sites with games and tools to help you learn the periodic table:

• Funbrain

History and government sites:

Games to help you learn states and state capitals:

• Guia.com
• Sheppards Software

Biographies of U.S. presidents (all the relevant facts for president reports):

• White House Bios written for kids by kids
• More difficult (and detailed) White House Bios

Facts about the U.S. government and the White House:

• U.S. Government and political system
• White House for kids
• White House

Statistics (some of these may be hard for young children to understand):

• U.S. Census Bureau

Math Sites:

Sites with games that help you practice math (elementary and middle school):

• Cool Math for kids -- you choose from 7 different difficulty levels in arithmatic, fractions, decimal, and algebra games.
• Primary Games -- fun games to help young children practice math.
• Prongo - basic numbers games for very young children and arithmetic games for older children.

Sites with games that help you practice math (middle and high school):

Fiction sites:

Sites based around novels and authors:

• Harry Potter
• Lemony Snicket

Sites with stories and reading games:

• Mystery Net for Kids-- full of short "whodunit" mysteries that kids can solve on-line. They can also post their own mysteries.
• Mystery Net -- the adult version of this site contains even more challenging whodunits.

Mad lib type games:

• Wacky Web Tales -- practice grammar while you fill in funny short stories and poems.

Language sites:

English sites with word and vocabulary games:

• Freerice --Donate rice to famine-ridden countries while practicing your vocabulary.  Site offers multiple choice question and adjust vocabulary level according to students' current skill level..
• Syndicate.com -- lots of puzzles and games to help you build vocabulary (some are quite hard!). For grades 7-12.

Sites to help you with English grammar and language:

• Guide to Grammar & Writing -- explanations of grammar and punctuation rules and advice on writing (may be a little hard for elementary school students).
• The Write Site-- Helpful writing tips designed especially for middle school students. Click "Editor's Desk" for printable graphic organizers.

Foreign language sites:

• Internet Picture Dictionary-- picture dictionaries, flashcards, and games to help you learn Spanish, French, German, or Italian.
• Fodors -- language lessons (especially phrases useful for traveling) in French, German, Italian, and Spanish.
• StudySpanish.com -- tutorials for learning Spanish.
• WannaLearn.com -- links to free on-line language sites for dozens of world languages including Arabic, Greek, Russian, and Vietnamese.
• Babelfish -- translates words and phrases into Spanish, German, Italian, French, Korean, Japanese, Portuguese, Russian, and Chinese.

Educational games:

Sites with a wide range of educational games:

• Fun Brain -- math, word, and science games.
• Zeeks - test your knowledge of states and capitals, play mindbenders, even play Mancala on-line.
• Primary Games -- math, language arts, social studies, and science games.
• Prongo - all kinds of games (for kids as young as 3), including quizzes on dinosaurs and outer space.
• Fun Island -- fun math and word games (including the Lemonade Stand game) and even a virtual piano.

Math games:

• Cool Math for Kids -- try your hand at running a virtual lemonade stand!

Trivia games:

• Sheppards Software -- trivia games on a wide range of topics (for grades 7-12).

General kid sites:

For elementary school children of all ages:

• SurfNetKids - a general site with links to all kinds of educational sites.

For teens and pre-teens:

• Kidscom -- lets kids write stores, compose music, invent gadgets, and participate in kid chat rooms.

Test preparation sites:

Sites that allow you to take practice standardized tests:

• College Board -- the official SAT site has a practice test you can take on-line. They'll score it for you.
• Taketest.com -- practice questions for every type of SAT question.
• Syvum.com -- practice questions for every type of SAT question.
• Number2.com -- practice for SAT, GRE, and ACT.
• Do Your Math -- practice questions for SAT and PSAT skills.