The document introduces universal design for learning (UDL) and its principles. It discusses how UDL aims to make curriculum accessible to all learners by considering individual differences and providing multiple means of representation, expression and engagement. It also explains how UDL is informed by research on the learning brain and its recognition, strategic and affective networks. Activities include exploring challenges to differentiation, brainstorming other UDL examples, and discussing UDL principles in small groups.