Equivalence principle Whiteboard exercise Play

Equivalence principle Student activity Play

Exceptions to the Hardy–Weinberg principle Slideshow Play

Exceptions to the Hardy–Weinberg principle Student activity Play

Fermat's principle Student activity Play

Fermat's Principle Simulation Play

Fermat's Principle Whiteboard exercise Play

Fermat's principle Simulation Play

Fermat's principle Whiteboard exercise Play

Fermat's Principle Student activity Play

Fermat's Principle Simulation Play

Fermat's Principle and the law of reflection of light Animation Play

Five billiard balls collisions Whiteboard exercise Play

Floating bodies Class activity Play

Floating bodies Whiteboard presentation Play

Floating on the surface Student activity Play

Floating on the surface Animation Play

Floating on the surface Whiteboard exercise Play

Heterogeneous bodies Animation Play

How to explain the refraction of light Animation Play

Huygens' principle Animation Play

Huygens' Principle Animation Play

Huygens' principle Whiteboard exercise Play

Huygens' Principle Animation Play

Huygens' Principle Student activity Play