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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.
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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.