The average speed of the snail Whiteboard exercise Play

The electron configuration of an atom and its position in the periodic table Student activity Play

The electron configuration of an element and its position in the periodic table Animation Play

The evolution of invertebrates Student activity Play

The evolution of the plant world Student activity Play

The evolution of vertebrates Student activity Play

The first and second ionisation energies Animation Play

The first and second ionisation energies of the Group 2 elements Student activity Play

The groups of invertebrates Whiteboard exercise Play

The history of the Earth Whiteboard exercise Play

The history of the Earth Student activity Play

The law of periodicity and the properties of elements Animation Play

The octet rule Animation Play

The principal and azimuthal quantum numbers Animation Play

The structure of a reptile's egg Slideshow Play

The structure of the periodic table Student activity Play

The structure of the periodic table – blocks Student activity Play

The structure of the periodic table – blocks Whiteboard exercise Play

The structure of the periodic table – groups (1) Student activity Play

The structure of the periodic table – periods Student activity Play

Three billion eight hundred million years of history Student activity Play

Types of habitat Student activity Play

Types of invertebrates Slideshow Play

Valence-shell electron-pair repulsion theory (VSEPR theory) Student activity Play

What is a covalent bond? Whiteboard exercise Play