Dr. Kathy Perkins is Director of the PhET Interactive Simulations project at University of Colorado Boulder, and a faculty member in Physics Education Research. She is a leading innovator in the design and classroom use of interactive simulations to increase engagement and learning in STEM. She has authored over 60 articles on STEM education. Under her leadership, PhET has received international recognition, including being named a 2017 WISE Awards Winner and a 2011 Tech Award Laureate, and has grown to over 130 million simulation uses/year worldwide. In recent years, her team launched PhET-iO simulations – enabling customization, integration, and data analytics – and has been a leading innovator in accessible simulations, creating new opportunities to advance learning and assessment for all students.