Free science and math simulations for teaching STEM topics, including physics, chemistry, biology, and math, from University of Colorado Boulder

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Start learning physics, free. Learn how to convert units, with automatic unit canceling. Get practice with prefixes (e.g. kilo, milli, centi) and convert between meters and feet, ounces and grams, …

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Physics courses can help you learn classical mechanics, electromagnetism, thermodynamics, and quantum physics. Compare course options to find what fits your goals.

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