PhET: Free online physics, chemistry, biology, earth science and …
Free science and math simulations for teaching STEM topics, including physics, chemistry, biology, and math, from University of Colorado Boulder
My Account - PhET Interactive Simulations
By converting our sims to HTML5, we make them seamlessly available across platforms and devices. Whether you have laptops, iPads, chromebooks, or BYOD, your favorite PhET sims are always right at your fingertips.Become part of our mission today, and transform the learning experiences of students everywhere!
Build an Atom - Atoms - PhET Interactive Simulations
Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test your ideas!
States of Matter - PhET Interactive Simulations
Explore the states of matter with interactive simulations that show how molecules form solids, liquids, and gases.
My Solar System - PhET Interactive Simulations
Explore the solar system with interactive simulations and learn about the movement of planetary objects.
Activities - PhET Interactive Simulations
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 <a {{0}}>research</a> and engage students through an intuitive, game-like environment where students learn through exploration and discovery.
My Solar System - PhET Interactive Simulations
Explore and design your own solar system with this interactive simulation, observing gravitational forces and celestial body orbits.
Gravity and Orbits - PhET Interactive Simulations
Explore gravity and orbits with interactive simulations.
Density - Mass | Volume - PhET Interactive Simulations
Why do some materials like wood float in water, and others don’t? Interact with blocks of different materials, including a custom option by modifying their mass and volume, to explore the effect on the density and discover the conditions for sinking or floating in water. Play detective to determine the material of each block by comparing its density with the values in the table.
Natural Selection - PhET Interactive Simulations
Explore how organisms with different traits survive various selection agents within the environment.