UDL is a framework to guide the design of learning environments that are accessible, inclusive, equitable, and challenging for every learner. Ultimately, the goal of UDL is to support learner agency, the capacity to actively participate in making choices in service of learning goals. The UDL Guidelines inform the design of learning environments to support learner agency.” (source: https://udlguidelines.cast.org/more/udl-goal/) The following resources are a great place to start learning about Universal Design for Learning (UDL):
