Graphical labs
Time-stepping simulations at teaching resolution. Diagnostics (energy, magnetization, etc.) are shown on screen.
Featured
Orbital mechanics
Two-body Kepler vs Verlet trail
Schwarzschild orbits
Timelike geodesic + precession
Schrödinger packet
Crank–Nicolson TDSE
Ising model
2D Metropolis, Onsager T_c
Also in the lab
Same player, same on-screen diagnostics.