https://phet.colorado.edu/
PhET: Free online physics, chemistry, biology, earth science and math simulations
Free science and math simulations for teaching STEM topics, including physics, chemistry, biology, and math, from University of Colorado Boulder
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https://www.edumedia.com/en
Interactive Science and Math Simulations for STEM – EduMedia
Teach science with the largest digital resource collection — Visual, interactive, and student-approved.
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