ELA

Whooo's Reading

Treasures reading series (games, spelling and vocabulary practice, and more)

What Should I Read Next? will help find a new book for you to read.

Summer suggestion: Books That Have Movies

If you like being read to, check out Storyline Online.  Celebrities will read to you!

Highlights for Kids

FREE Reading Games at Jump Start

Book Trailers for Readers
Build vocabulary and help others at FreeRice.com.
Take practice reading quizzes at Book Adventure.
100 Great Books to Read Aloud 
Book Suggestions for 4th/5th Graders

FreeRice.com 
MyVocabulary.com FREE vocabulary practice (not associated with our reading series)
Vocabulary Activities 4-6

FREE EBOOKS:
We Give Books 
Classic Kids Books
Children's Storybooks
Free Kids Books

Brainpop.com

Learnzillion 

Poetry 4 Kids

Adverb practice

Verbs
Help with Writing

OWL (Online Writing Lab) 

Here are some suggestions for research to help you get your facts straight:
Fact Monster
Time for Kids
National Geographic
Kids Net (search engine for kids)