During this session, David covered content from Chapter 3 of his book Universal Design for Learning on the Variability of Learners. This chapter explores new learning technologies that are augmenting and replacing old learning technologies like blackboards and printed textbooks. While the new technologies are still used primarily in traditional ways, they provide a platform that is potentially much more disruptive because it is not only more powerful but more flexible. That flexibility is under-utilized in most applications, however, because designers still imagine that learners are pretty much the same, or vary along narrow dimensions – like “intelligence” or “preparedness.” Modern neurosciences on the other hand reveal multiple dimensions of individual differences that are highly consequential for adequate learning design. This session will explore the new sciences of variability, and the kinds of learning designs that are responsive to that variability, as part of the fast-growing field called Universal Design for Learning.