Language Arts:
- Starfall
 - Raz-Kids
 - Utah Write
 - Read, Write, Think
 - Spelling City
 - Big Universe (Online Books)
 - Free Rice
 - Wordle
 - Magnetic Poetry
 - Storyline Online
 
Math:
- Times Attack
 - Multiplication.com
 - Cool Math Games
 - Math Journey
 - J Math Page
 - Lemonade Stand
 - Create a Graph
 - Virtual Manipulatives
 - Illuminations
 - Arcade Skill Builder
 - I Know That
 - IXL
 
Science:
Social Studies:
- 50 States Puzzles
 - CNN Student News
 - US Geography Games
 - National Geographic Kids
 - The White House
 - Plimoth.org
 - Revolutionary War - Mission US
 
Health:
Other:
Just for Fun/Misc:
For Teachers:
- Everything! (Portaportal)
 - Internet 4 Classrooms
 
*Please Note:*
 As you give me your ideas, this list will grow. 
Thanks in advance! :)
