Chess Kid - Learn how to play chess with other kids.
CK-12 - Curriculum Material for all grade levels
Time for Kids - Time for Kids is offering their digital library for free until the end of the school year.
Lunch Doodles with Mo Willems - Drawing lessons from author, Mo Willems.
Printable Board Games - Board games, dominoes, dice games and more.
TypeTastic - Free site, but you have to create an account.
Arcademics - Math and Language Games by Grade Level
BreakoutEDU - Educational Games (Kindergarten-HighSchool)
Turtle Diary - Choose by subject and grade level.
Mr. Nussbaum - Part of this website is paid content, but there are lots of games to play for free.