A sperm cell Whiteboard exercise Play

Ability to react with metals Animation Play

About cells Student activity Play

Absorption of digestive products – role of the intestinal villi and their epithelial cells Whiteboard exercise Play

Absorption of digestive products – role of the intestinal villi and their epithelial cells Student activity Play

Abundance of the elements in the crust and in the whole Earth Animation Play

Acetabularia sp. Slideshow Play

Acids (2) Student activity Play

Acids and alkalis Class activity Play

Across the periodic table Student activity Play

Additional information contained in chemical equations Student activity Play

Alkaline earth metals Slideshow Play

Alkaline earth metals Student activity Play

Alpha decay Whiteboard exercise Play

Aluminium alloys Student activity Play

An atom and a nucleus Student activity Play

An atom and a nucleus Animation Play

An atom and a nucleus Whiteboard exercise Play

An egg cell Whiteboard exercise Play

Angiosperms - ovule and pollen grain Whiteboard exercise Play

Animal and plant cells Illustration Play

Animal and plant cells Class activity Play

Animal cells Student activity Play

Animal cloning – the use of embryonic cells Student activity Play

Apical and lateral meristems Student activity Play