Below are several links to websites I recommend:
EPIC
Scholastic Books
My On Reading
Children's Choices Book List
Teacher's Choices Book List
http://www.reading.org/Libraries/parents/pb1074_technology.pdf
Read, Write, Think
Spelling City
Free Rice
Fun Brain
Phonics
English as a Second Language Resources
Many Things
Forvo
Research sites for kids
Ask.com
Kids Click