Kids Domain (all ages)

Many activities, including hundreds of online games, organized by category.

PBS Kids (preschool through elementary)

Interactive games, stories, music and more. Older kids should check out Cyberchase, Liberty's Kids, Sagwa and Zoom from the left menu.

Webmonkey for Kids (ages 8-80)

"The fun way to build Web sites." A great place for techies and future techies to learn and play.

Play Kids' Games (elementary)

Math, alphabet, vocabulary, problem solving, and memory games.

CBC4Kids (elementary through middle school)

Music, science, words, and more. There's something for everyone here.

FunBrain (all ages)

Games for kids of all ages: math, grammar, science, spell, history

Vocabulary.Com (high elementary through high school level)

Fun puzzles to build vocabulary. Select the appropriate level and have fun.

Yes Mag (all ages)

Science magazine for kids, including brain games, "hands on" activies and more!

Hop Pop Town (ages 3 to 10)

Children invent their own musical sequences as they play games and combine sound with pictures using an easy, child-friendly interface. Includes writing pages that take material from musical games and help children use multiple media to express themselves. Get help from the cute "Help Racoon!"

Yahooligans Games (all ages)

Board games, card games, word games, and more.

Virtual Frog Dissection Kit (upper middle to high school)

Dissect a frog online! Make on-the-fly movies. Test your knowledge with the Virtual Frog Builder Game. From Lawrence Berkeley Laboratory.

Kidsites.com Online Games (all ages)

Lots to do here -- tons of online games to play, plus check out the other categories in the left menu

Kids' Space (young teens and younger)

Submit your own! Share samples of music you have performed, upload your own drawings or stories, and enjoy the work of other kids from all over the world!

Soda Constructor (middle school and up)

The online toy where you can build and play with things made out of masses, springs and muscles

The Great Plant Escape  (grades 4-5)

Solve a mystery! Help Detective LePlant on his search. We need your help to find clues, do experiments, and solve problems as we journey into the world of plants.

World Almanac for Kids Online (elementary school and up)

Games, quizzes, contests, homework help, facts on topics like space, presidents, the environment, animals, geography and historical birthdays for kids

KidComics (all ages)

The Club for Comic Book lovers: a free humour ezine for kids, full of online comics, games, free gifts, brainteasers, etc.

Bonus.Com (all ages)

"The Supersite for Kids!" Tons of activities. Try to ignore the "kid" feel to the site -- many of the cute little icons lead to some very interesting places (like the Jerusalem Exhibit), whether you're a kid of 8 or 80. Commercial.