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Science Simulations
Interactive PhET simulations from University of Colorado Boulder
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Physics
Chemistry
Biology
Earth Science
Mathematics
120 simulations
Acid-Base Solutions
Chemistry
Physics
Area Builder
Mathematics
Math
Area Model Algebra
Mathematics
Math
Area Model Decimals
Mathematics
Math
Area Model Introduction
Mathematics
Math
Area Model Multiplication
Mathematics
Math
Arithmetic
Mathematics
Math
Atomic Interactions
Chemistry
Physics
Balancing Act
Mathematics
Biology
Balancing Chemical Equations
Chemistry
Physics
Balloons and Static Electricity
Chemistry
Earth Science
Beer's Law Lab
Chemistry
Physics
Bending Light
Blackbody Spectrum
Chemistry
Earth Science
Build a Fraction
Mathematics
Math
Build a Molecule
Chemistry
Physics
Build a Nucleus
Chemistry
Build an Atom
Chemistry
Physics
Buoyancy
Buoyancy: Basics
Calculus Grapher
Mathematics
Math
Capacitor Lab: Basics
Center and Variability
Mathematics
Math
Charges and Fields
Circuit Construction Kit: AC
Circuit Construction Kit: AC - Virtual Lab
Circuit Construction Kit: DC
Circuit Construction Kit: DC - Virtual Lab
Collision Lab
Color Vision
Concentration
Chemistry
Physics
Coulomb's Law
Chemistry
Physics
Curve Fitting
Mathematics
Biology
Density
Chemistry
Earth Science
Diffusion
Chemistry
Earth Science
Energy Forms and Changes
Chemistry
Physics
Energy Skate Park
Energy Skate Park: Basics
Equality Explorer
Mathematics
Math
Equality Explorer: Basics
Mathematics
Math
Equality Explorer: Two Variables
Mathematics
Math
Expression Exchange
Mathematics
Math
Faraday's Electromagnetic Lab
Faraday's Law
Forces and Motion: Basics
Fourier: Making Waves
Chemistry
Mathematics
Fraction Matcher
Mathematics
Math
Fractions: Equality
Mathematics
Math
Fractions: Intro
Mathematics
Math
Fractions: Mixed Numbers
Mathematics
Math
Friction
Function Builder
Mathematics
Math
Function Builder: Basics
Mathematics
Math
Gas Properties
Chemistry
Earth Science
Gases Intro
Chemistry
Earth Science
Gene Expression Essentials
Generator
Geometric Optics
Geometric Optics: Basics
Graphing Lines
Mathematics
Math
Graphing Quadratics
Mathematics
Math
Graphing Slope-Intercept
Mathematics
Math
Gravity and Orbits
Earth Science
Gravity Force Lab
Earth Science
Gravity Force Lab: Basics
Earth Science
Greenhouse Effect
Earth Science
Hooke's Law
Isotopes and Atomic Mass
Chemistry
Physics
John Travoltage
Kepler's Laws
Earth Science
Mathematics
Least-Squares Regression
Mathematics
Math
Magnet and Compass
Earth Science
Magnets and Electromagnets
Make a Ten
Mathematics
Math
Masses and Springs
Mathematics
Biology
Masses and Springs: Basics
Mean: Share and Balance
Mathematics
Math
Membrane Transport
Chemistry
Physics
Models of the Hydrogen Atom
Chemistry
Physics
Molarity
Chemistry
Physics
Molecule Polarity
Chemistry
Physics
Molecule Shapes
Chemistry
Physics
Molecule Shapes: Basics
Chemistry
Physics
Molecules and Light
Chemistry
Earth Science
My Solar System
Earth Science
Natural Selection
Neuron
Number Compare
Mathematics
Math
Number Line: Distance
Mathematics
Math
Number Line: Integers
Mathematics
Math
Number Line: Operations
Mathematics
Math
Number Pairs
Mathematics
Math
Number Play
Mathematics
Math
Ohm's Law
Mathematics
Biology
Pendulum Lab
Mathematics
Biology
pH Scale
Chemistry
Earth Science
pH Scale: Basics
Chemistry
Physics
Plinko Probability
Mathematics
Math
Projectile Data Lab
Mathematics
Biology
Projectile Motion
Mathematics
Biology
Projectile Sampling Distributions
Mathematics
Biology
Proportion Playground
Mathematics
Math
Quadrilateral
Mathematics
Math
Quantum Coin Toss
Chemistry
Quantum Measurement
Chemistry
Quantum Wave Interference
Chemistry
Ratio and Proportion
Mathematics
Math
Reactants, Products and Leftovers
Chemistry
Physics
Resistance in a Wire
Mathematics
Biology
Rutherford Scattering
Chemistry
Physics
States of Matter
Chemistry
Physics
States of Matter: Basics
Chemistry
Physics
Trig Tour
Mathematics
Math
Under Pressure
Earth Science
Unit Rates
Mathematics
Math
Vector Addition
Mathematics
Math
Vector Addition: Equations
Mathematics
Math
Wave Interference
Earth Science
Wave on a String
Chemistry
Earth Science
Waves Intro
Earth Science