Structure of the ear Animation Play

Supersonic flights Student activity Play

Supersonic flights Simulation Play

Supersonic flights Whiteboard exercise Play

Television Slideshow Play

Television Student activity Play

The amplitude and the frequency of sound Simulation Play

The amplitude and the frequency of sound Whiteboard exercise Play

The amplitude and the frequency of sound Student activity Play

The application of the Doppler effect Animation Play

The audible range of humans Student activity Play

The Doppler effect Whiteboard presentation Play

The Doppler effect Animation Play

The Doppler effect Simulation Play

The Doppler effect Class activity Play

The Doppler effect Student activity Play

The Doppler effect and the formation of a shock wave Simulation Play

The Doppler effect and the formation of a shock wave Student activity Play

The Doppler effect in the animal world Student activity Play

The ear Illustration Play

The ear Student activity Play

The Earth's rotation Animation Play

The ecosystem – an organized and functional unit of the natural environmental Whiteboard presentation Play

The ecosystem – an organized and functional unit of the natural environmental Class activity Play

The effects of loud sounds Student activity Play