Interactive Learning

DATA.gov
"As a priority Open Government Initiative for President Obama's administration, Data.gov increases the ability of the public to easily find, download, and use datasets that are generated and held by the Federal Government."

Khan Academy
"With a library of over 2,800 videos covering everything from arithmetic to physics, finance, and history and 295 practice exercises, Khan Academy is on a mission to help you learn what you want, when you want, at your own pace."

MERLOT  
Browse learning material from across disciplines and personal collections.  Find learning exercises, connect with colleagues in your field, or find a guest expert to speak virtually to your students. 

NCLive
"The power of your library, online! They give you free access to eBooks, audio books, videos, online magazines, newspapers, journals, and more."

North Carolina Learning Object Repository (NCLOR)

The repository collects documents, audio/video clips, simulations, learning modules, assessments, and more – virtually any type of learning resource that can be digitized and processed. Teachers from around the state can then search the NCLOR, find resources appropriate to the classes they are teaching, and use them as is or modify them to suit their needs.

Thinkfinity

Hosted by the Verizon Foundation they tout "Partnering with the most trusted names in education to bring you teaching and learning materials, as well as a community excited about education, just like you are."