Derived from the words "flexibility" and "textbook",
Flexbook is a free
open source textbook platform that can be used to build
and edit collaborative textbooks. Flexbook is an open-content, web-based
collaborative model that enables educators to customize content by repurposing
what needs to be taught while adhering to the local education standards.
Flexbook is maintained by the CK-12 Foundation, a non-profit organization with a
goal of reducing the cost of textbook materials for the K-12 market both in the
U.S. and worldwide.