Physics by grade
The units of Lehrplan (Saarland, Gymnasium) with matching simulations. The summaries are our own – the original text is authoritative.
More simulations
These simulations are not assigned to a grade in the Saarland curriculum.

Horizontal and oblique projectile motion
Which launch angle goes furthest? On Earth it is 45°, and on the Moon the same ball flies six times as far.

Doppler effect
An ambulance drives past and the siren sounds lower. The wave fronts show why. You can also listen to it.
The summaries describe the curriculum in our own words. The original text is authoritative.