Audibility range Whiteboard exercise Play

Bats Animation Play

Beats Whiteboard exercise Play

Beats Student activity Play

Beats Student activity Play

Beats Animation Play

Beats Simulation Play

Beats Simulation Play

Biogas and biofuels Student activity Play

Body waves: longitudinal P-wave and transverse S-wave Animation Play

Bottles Animation Play

Bremsstrahlung (braking radiation) Whiteboard exercise Play

Bremsstrahlung (braking radiation) Student activity Play

Carbohydrates and fats – energy substrates Student activity Play

Carbohydrates – the basic source of energy Student activity Play

Carbohydrates – the basic source of energy Whiteboard exercise Play

Carnivorous plants and their distribution Slideshow Play

Categories of sources of heat Slideshow Play

Change in frequency Student activity Play

Change in frequency Whiteboard exercise Play

Chemical energy sources Student activity Play

Circles on water Animation Play

Circular waves Slideshow Play

Circular waves Student activity Play

Circular, spherical and plane waves Student activity Play