Universal Design for Learning (UDL) is an educational framework that considers the needs of all learners by addressing three principles of learning - how students receive information, express what they know, and stay motivated to learn. UDL aims to make learning accessible and engaging for everyone by providing multiple means of representation, action and expression, and engagement regardless of ability level. Effective UDL implementation involves presenting content in varied formats, allowing for different modes of participation and expression, and finding ways to motivate and challenge all students.