Here is a huge list of wonderful sites for children......
TOY COMPANIES/KIDS' MEDIA
Hot Wheels
Lego
My Little Pony
Thomas the Train
Pepperidge Farm Goldfish
Playmobil
Candyland
PBS Kids
Nick Jr. Arcade
Disney Channel
Disney Princesses
Barbie
Star Wars
American Girl
Girl Scouts
Polly Pockets
Cartoon Network
READING/PHONICS
Starfall
Bembo's Zoo
Pouisson Rouge
YOUNG TODDLERS
KneeBouncers
Bembo's Zoo
Lil' Fingers Storybook
The Little Animals Activity Center
Peep and the Big Wide World
Brain Pop Jr.
Pouisson Rouge
Hubbard's Cupboard
GENERAL LEARNING AND GAMES
Primary Games
IKnowThat.com
Arcademic Skills Builders
EdHelper
Internet4Classrooms
FunBrain
Jan Brett
Orisinal
Peep and the Big Wide World
Brain Pop Jr.
Word Central
SuperKids
BrainPOP
Uptoten
MiniClip
Syvum
Priory Woods
Haring Kids
Sodaplay
Smithsonian Kids
Time Magazine for Kids
GameScene
Prongo
Puzzability
Kids' CBC
Stardust Lullaby
MATH
Cool Math 4 Kids
Rainforest Maths
A Plus Math
Math Playground
Multiplication.com
COMPUTERS/TYPING
Alice.org
Dance Mat Typing
ANIMALS/NATURE
WolfQuest
The Little Animals Activity Center
PestWorld For Kids
eNature
Bella Sara
Animal Planet
Ology (American Museum of Natural History)
Kids Go Wild Arcade (Wildlife Conservation Society)
Howrse
GEOGRAPHY
National Geographic Kids
Mexico for Kids
Seterra
CIA Kids' page
STORIES/BOOKS
StoryPlace
Seussville
Lil' Fingers Storybook
Storyline Online
Story Nory
Project Gutenburg Children's Bookshelf
Scholastic's Summer Reading Buzz
BookAdventure
Shel Silverstein
Peanuts
Aesop's Fables
Andersen Fairy Tales
Giggle Poetry
Wacky Web Tales
TumbleBooks
ART
Crayola Digi-Color Tool
NGA Kids
Jan Brett
Creative Park
@rt Room
Lite Brite
Paint Like Jackson Pollock
Art Attack
MUSIC
Creating Music
PlayMusic
ROLE-PLAYING/NETWORKING
Moshi Monsters
Millsberry
Poptropica
Whyville
Franktown Rocks
SCIENCE
Discovery Kids
National Geographic Kids
NASA Kids' Club
Mars Exploration
Science Museum
Steve Spangler Science
Smithsonian Kids
Ology (American Museum of Natural History)
Extreme Science
Arty the Part-Time Astronaut
SpaceKids
COOKING
Spatulatta
Culinary Institute of America Kids
Children's Recipes
Food Network kids' page
FOREIGN LANGUAGE
Salsa
Mexico for Kids
HISTORY/SOCIAL STUDIES/GOVERNMENT
CIA Kids
National Geographic Kids
America's Story
HyperHistory
White House For Kids
WRITING
On-line Writing Lab (Purdue University)