by Emily B. Moore
The PhET Interactive Simulations project at the University of Colorado Boulder develops a popular suite of free simulations (sims) for teaching and learning science and mathematics. This suite consists of over 150 interactive sims on topics in physics, chemistry, mathematics, earth science, and biology for students from elementary school to college. The PhET project impacts classrooms around the world with over 100 million sim runs per year, with sims available in 86 languages. In this article, we introduce PhET sims, describe features found in all PhET sims that support student engagement, and provide examples of how the sims can be used by teachers.