Websites linking back to ck12support.zendesk.com

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Free Online Textbooks, Flashcards, Adaptive Practice, Real World Examples, Simulations | CK-12 Foundation

http://portalrankings.com/info/ck12.org

CK-12 Foundation provides a library of free online textbooks, videos, exercises, flashcards, and real world applications for over 5000 concepts from arithmetic to history

Google+ User ID: +Ck12Org
Updated On (Date): 2012-Jul-11
Expiration time: 2017-Dec-16
Website Registered On (Date): 2006-Dec-16