Learn physics while designing your own roller coaster.
Detailed math videos and practice -- from simple to complex.
Easy way to create short, original videos online.
Combine videos, photos, and music; best for Facebook users.
Quick, before school starts, send your kids to this edu-site to brush up on math, science, English, and social studies.
Kids of all ages can indulge their sea and space curiosity.
Massive collection of fun, free, online games.
Slightly sensationalistic news, social networking.
Complex math concepts presented as real-world examples.
Is your tween hungry for knowledge? Point them here to find resources and information in kid-friendly form.
Learning games for the preschooler set are fun, fun, fun.
Exciting storybook world keeps kids engaged in reading.
Official Olympics site is safe for kids.
No-frills site for algebra practice.
Smart sex-ed site puts spotlight on teen contributors.
A wonder a day will keep kids' eyes open to discovery.
Have fun with anatomy using 3-D images, interactive tools.
Start with a topic, and site will you lead to a great book.
Creepy social network features racy photos, suggestive talk.
Health professionals tackle personal questions with candor.
Marvel heroes give kids a safe intro to virtual worlds.
Good site for teens to watch and discuss fave Nick shows.
Create beautiful books to share online and in print.
Site sparks business know-how but needs more work.
Learning a new language can be tricky -- and a lot of fun. Kids will learn some basic Spanish from Noah's mix-ups and discover that it's OK to make mistakes along the way