This document provides an introduction to Universal Design for Learning (UDL). UDL is an approach to teaching that focuses on providing multiple means of representation, expression, and engagement to give all students equal opportunities to learn. It advocates for flexibility in curriculum design based on principles of providing options for perception, physical action, and engaging the affective networks of the brain. Examples of how UDL has been applied in architecture, television, and technology are given. The three principles of UDL and how they relate to presentation, expression, and engagement are then expanded upon with guidelines for incorporating UDL into lesson planning and resources for teachers.