A human as the intermediate host Slideshow Play

A kinetic study on the hydrolysis of methyl ethanoate Animation Play

A microscopic view Animation Play

Acceleration Whiteboard exercise Play

Acceleration Student activity Play

Accumulated amount Whiteboard exercise Play

Active and passive transport Whiteboard exercise Play

Adaptation of birds for flight Slideshow Play

Adaptations of birds for flight Student activity Play

Adaptations of fish to life in water Slideshow Play

Adaptations of fish to life in water Student activity Play

Adaptations of reptiles and amphibians to life on land Slideshow Play

Adaptations of reptiles and amphibians to life on land Student activity Play

Adrenaline – the "flight or fight" hormone Student activity Play

Amphibians Student activity Play

An extraordinary muscle Slideshow Play

Anatomy of the heart vessels Whiteboard exercise Play

Anatomy of the heart vessels Student activity Play

Annual percentage rate Student activity Play

Annual percentage rate (APR) Whiteboard exercise Play

Antagonistic actions of the autonomic nervous system Student activity Play

Aromatic amines Student activity Play

Arteries and the pulse Student activity Play

Atherosclerosis and coronary heart disease Whiteboard exercise Play

Atherosclerosis and coronary heart disease Student activity Play