Free, interactive simulations for physics, chemistry & math. Learn by experimenting — no install needed.
Explore periodic motion with an adjustable pendulum. Change length, gravity & damping.
✓ LiveLaunch projectiles with adjustable angle, speed & gravity. Compare multiple shots.
✓ LiveBuild DC circuits with batteries, resistors, bulbs & switches. See current flow.
✓ LiveVisualize sine waves, adjust frequency, amplitude, speed & damping. See wavelength in real-time.
✓ LiveExplore acidity and alkalinity. Select solutions and see pH, [H⁺] & [OH⁻] concentrations.
✓ LiveExplore molecular structures. Rotate 3D models of H₂O, CO₂, CH₄, NH₃ & more.
✓ LiveInteractive 3D DNA double helix with colored base pairs. Learn A-T, G-C pairing.
✓ LiveInteractive photosynthesis visual. Adjust light, CO₂ & water to see O₂ and glucose production.
✓ LiveGraph functions with adjustable parameters. Quadratic, cubic, sin, cos, exp & log.
✓ LiveVisualize sin, cos & tan on the unit circle. See how angle θ relates to trig values.
✓ Live