Founded in 2002 by Nobel Laureate Carl Wieman, the PhET Interactive Simulations project at the University of Colorado Boulder creates free interactive math and science simulations. PhET sims are based on extensive education research and engage students through an intuitive, game-like environment where students learn through exploration and discovery. PhET is a non-profit project that creates and hosts free online simulations for science and math education. Founded by Nobel Laureate Carl Wieman, PhET has over 125 simulations in five disciplines and reaches millions of users worldwide. Learn how to use PhET interactive simulations for science and mathematics teaching and learning. Explore the features, design process, accessibility, and inclusion of PhET sims in this online course.