ATP – a universal carrier of energy Student activity Play

ATP – a universal transporter of energy Student activity Play

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

Audible frequency range of humans Slideshow Play

Audible frequency ranges Student activity Play

Autoionisation of water Student activity Play

Autoionisation of water Whiteboard exercise Play

Autoionisation of water and the Kw constant Animation Play

Autotrophic nutrition and photosynthesis Class activity Play

Autotrophic nutrition and photosynthesis Whiteboard presentation Play

Autotrophism in plants Student activity Play

Autotrophs and heterotrophs Animation Play

Availability of water and the rate of photosynthesis Student activity Play

Availability of water and the rate of photosynthesis Whiteboard exercise Play

Avogadro's number Animation Play

Avogadro's number Animation Play

Avogadro's number Student activity Play

Avogadro's number (1) Student activity Play

Avogadro's number (2) Student activity Play

Bacteria and the energy sources Whiteboard exercise Play

Balance Student activity Play

Balance Simulation Play

Balance Whiteboard exercise Play

Balance of matter and energy in the environment Slideshow Play

Balance – differences between energy input and energy output Whiteboard exercise Play