Chemistry
Acid-Base Solutions
Compare strong and weak acids and bases in solution.
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Gravity and Orbits
Change masses and distances to see how gravity controls orbits.
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Simulation by PhET Interactive Simulations, University of Colorado Boulder. LearnHive curates the catalog and supporting study material.
Quick start
- Pick a system (like Sun and planet) from the tabs.
- Set the initial velocity of the orbiting body.
- Press play and watch whether the orbit is stable, escapes, or crashes.
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Math
Area Builder
Build shapes to explore area and perimeter.
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Area Model Algebra
Multiply polynomials using an area model.
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