We recently had a PD which was called "Differentiated Use of Textbook". The presenter, former elementary school teacher from PA, started withe following: "The textbooks are boring, they contain too much dry information and too littl pictures and connections to technology".Temple Grandin would say this is an example of "the bad gets normal."
Mind you, she presented to a high school teachers. Especially in math and science, it's common among us to be annoyed with extremely heavy textbooks with TOO MANY pictures and TOO LITTLE of information so we rarely request that kids carry textbooks to class relying on lectures and for homeworks they use online versions.
Now, this whole differentiated textbook talk can be summarized a s following: sorry, kids can't read. So let's group them together and do this activity, and that activity, and this one activity so they will not need a textbook at all! And everyone will feel better, because stronger kids can go and research more online! And weaker kids can be assigned points for participation!