What is a FlexBook® textbook?

Written by felix on June 27, 2012
  • CK-12′s FlexBook® textbooks are open-source digital textbooks that are:
    • Free
    • Fully customizable
    • The current FlexBook® library primarily contains titles in science, technology, engineering, and mathematics. Users may read, download, and adapt CK-12′s textbooks at no cost.

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