Flipped Classrooms and History

From a teacher's blog about flipping the history classroom:

The basic idea of a flipped classroom is that a teacher uses technology to provide student access to foundational knowledge outside of class. This allows more time for inquiry, discussion, debate, collaboration, problem-solving, product development, or guided practice during class time. So rather than kids listening to you during class and doing work outside of class, you “flip” that idea – time outside of class is spent on gathering foundational knowledge and time in class is spent working with that content.

Wait, isn't that what I've been doing all along, except the "technology" I used to "provide student access to foundational knowledge" was called a BOOK?

Another history teacher's recommended resources for flipping.