Interactive
American Association of Physics Teachers

Com Padre Digital Library: Open Source Physics: Special Relativity on Rotated Graph Paper Model

For Students 9th - 10th
A representation of Minkowski spacetime diagrams using graph paper that is rotated, showing the world lines of three stationary observers with light clocks.
Interactive
American Association of Physics Teachers

Com Padre Digital Library: Open Source Physics: Minkowski Diagram Model

For Teachers 9th - 10th
Simulation examining simultaneity and causality in special relativity by manipulating the space and time coordinates of one or two events.