When we hear the phrase “unbundling” in education, it usually refers to one of two things. Either it’s about unbundling the university into component parts like separating courses from certification or it’s about unbundling content from textbooks or courses into discrete learning objects. But there is a different kind of unbundling that is beginning to happen that I feel confident is going to be very real: The unbundling of textbook publishers from content.
http://mfeldstein.com/the-great-unbundling-of-textbook-publishers/