PhET provides access to interactive simulation and research for teaching and learning mathematics, science, physics, chemistry, biology and other sciences. The simulation is animated using graphics, interactive controls, sliders and switches. The PhET Interactive Simulation Project was founded in 2002 by Carl Woman, a Nobel laureate from the University of Colorado at Boulder. PhET simulators are used by teachers and students around the world, which explains why these interactive simulators are available in translations in over 90 languages. PhET simulation , based on rigorous research, "involves students in an intuitive play environment where students learn through exploration and discovery." There are over 100 free interactive simulations that you can download from the web, mobile app or your computer. PhET simulation interactive. When students change settings or make simulations, they immediately respond to their changes and see the specific results of their changes