Free interactive math and science simulations from the University of Colorado Boulder for K-12 and university learners.
PhET Interactive Simulations is an award-winning, nonprofit open educational resource project founded in 2002 by Nobel Laureate Carl Wieman at the University of Colorado Boulder. It provides over 170 free, research-based interactive simulations for teaching and learning physics, chemistry, biology, earth science, and mathematics. Designed to foster engaged exploration and inquiry-based learning, PhET sims use intuitive, game-like environments with immediate visual feedback—allowing students to manipulate variables like gravity, circuit components, or molecular structures and observe cause-and-effect relationships in real time. The platform supports inclusive learning through accessibility features, multiple language translations (over 121 languages), and compatibility with any device via HTML5. Teachers can access a vast library of pre-made lesson plans, activities, and virtual lab guides submitted by the global educator community. Trusted by classrooms worldwide and used over 250 million times per year, PhET transforms abstract STEM concepts into tangible, exploratory experiences that deepen understanding and spark curiosity.
PhET Interactive Simulations is an award-winning, nonprofit open educational resource project founded in 2002 by Nobel Laureate Carl Wieman at the University of Colorado Boulder. It provides over 170 free, research-based interactive simulations for teaching and learning physics, chemistry, biology, earth science, and mathematics. Designed to foster engaged exploration and inquiry-based learning, PhET sims use intuitive, game-like environments with immediate visual feedback—allowing students to manipulate variables like gravity, circuit components, or molecular structures and observe cause-and-effect relationships in real time. The platform supports inclusive learning through accessibility features, multiple language translations (over 121 languages), and compatibility with any device via HTML5. Teachers can access a vast library of pre-made lesson plans, activities, and virtual lab guides submitted by the global educator community. Trusted by classrooms worldwide and used over 250 million times per year, PhET transforms abstract STEM concepts into tangible, exploratory experiences that deepen understanding and spark curiosity.
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