Musical tuning Animation Play

Musical tuning Whiteboard exercise Play

Natural water (1) Student activity Play

Natural waters Whiteboard presentation Play

Natural waters Class activity Play

Noise Animation Play

Noise and protection against noise Student activity Play

Non-renewable energy resources Student activity Play

Observation of the Universe Whiteboard exercise Play

Observation of the Universe Student activity Play

Oceans Whiteboard presentation Play

Oceans Class activity Play

Oil spill cleanup Animation Play

On what does the Doppler effect depend? Whiteboard exercise Play

On what does the Doppler effect depend? Student activity Play

On what does wave refraction depend? Whiteboard exercise Play

On what does wave refraction depend? Student activity Play

On what does wave refraction depend? Simulation Play

Oscillations of a string Class activity Play

Oscillations of a string Whiteboard presentation Play

Oscillations of strings in a guitar Animation Play

Ozone hole Whiteboard exercise Play

Ozone hole Student activity Play

Ozone hole Animation Play

Parameters of an electromagnetic wave Student activity Play