PhET Simulations Collection
Explore interactive science and math simulations from PhET, University of Colorado Boulder.

Forces and Motion: Basics
Physics

States of Matter: Basics
Chemistry

Circuit Construction Kit: AC
Physics

Circuit Construction Kit: DC
Physics

Acid-Base Solutions
Chemistry

Build an Atom
Chemistry

Balancing Act
Physics

Molecule Polarity
Chemistry

Gravity and Orbits
Earth & Space

Natural Selection
Biology

Area Builder
Math