This is a wonderful website, with LOTS of educational movies. Also, there is a sister site called GameUp which is awesome as well.
Merriam-Webster Dictionary Online
This is the online version of the dictionaries we have in class. You may need to hit the "see __________ defined for kids" to receive a simpler definition.
Where Is That?
One of my favorite geography games for kids. Work your way up until you can master Level 5 on World!