ATP – the main source of energy in a cell Animation Play

Audibility range Simulation Play

Audibility range Whiteboard exercise Play

Audibility range Student activity Play

Audible frequency range of humans Slideshow Play

Audible frequency ranges Student activity Play

Bats Animation Play

Beats Simulation Play

Beats Whiteboard exercise Play

Beats Student activity Play

Beats Simulation Play

Beats Student activity Play

Beats Animation Play

Biogas and biofuels Student activity Play

Bottles Animation Play

Carbohydrates and fats – energy substrates Student activity Play

Carbohydrates – the basic source of energy Whiteboard exercise Play

Carbohydrates – the basic source of energy Student activity 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, spherical and plane waves Student activity Play