"The Reed-Kellogg diagram is a tool of the classroom and of the textbooks that codify the rules for its production. But grammar textbooks share a problem similar to the one Thomas Kuhn noted for science textbooks: they tend to efface the history of their subject. Indeed, grammar textbooks are far more ahistorical that science textbooks. The average science textbook will contain some history, however Whiggish. There will be at least a cursory mention of the scientists who formulated the theories under discussion, some suggestion that scientific knowledge is subject to change and accretion. Grammar, however, comes to students as an abstract whole. The sources from which the textbook authors derived their accounts normally go unacknowledged. There is no sense of grammar as a theory—or, more precisely, a constellation of competing theories—with its own intellectual history."
(Karl Hagen, 17 October 2015)
"Open Courses will definitively shift the power from content to community in Higher Learning. The second coming of knowledge is firmly associated with free connections, inquiry and conversations, something that textbooks implicitly discourage. Textbooks, for all they stand for, are the industrial age contraptions that dominated learning for most of last fifty years; Open courses bring a much needed, paradigm shifting update.
In summary, then, Open Courses are eating the publishers' lunch, and that's where the resentment comes from. These masters of the learning universe already had enough trouble with the culture of Internet, and Open Courses represent everything they feared: the communities, the conversations and the knowledge commons. This isn't a battle which is over yet, but we may just be witnessing a passing of an age."
(Supriyo Chaudhuri, 05 November 2012)
"CK–12 Foundation is a non–profit organization with a mission to reduce the cost of textbook materials for the K–12 market both in the U.S. and worldwide. As a leading member of the OER movement, CK–12 is using an open–content, web–based collaborative model termed the 'FlexBook.' With these free, common core aligned and NSES aligned digital textbooks, CK–12 intends to pioneer the generation and distribution of high quality educational STEM content that will serve both as core text as well as provide an adaptive environment for learning through the FlexBook Platform"