A single covalent bond Animation Play

Bond energies for some single and multiple bonds Chart Play

Chemical structure of a single DNA strand Illustration Play

Formation of single bonds by carbon atoms Animation Play

Individuals of a single species Whiteboard exercise Play

Inheritance of a single trait Whiteboard presentation Play

Inheritance of a single trait Class activity Play

Lone electron pairs affect the shape of the molecule (1) Student activity Play

Mean bond enthalpy Student activity Play

Mean bond enthalpy Chart Play

Molecules with three or four covalent bonds Whiteboard exercise Play

Molecules with three or four covalent bonds (2) Student activity Play

Single and multicellular organisms Slideshow Play

Single carbon–carbon bond Animation Play

Taking out a single term from algebraic equations Student activity Play

Taking out a single term from algebraic equations Whiteboard exercise Play

The first division of a single cell Animation Play

The force exerted by a single gas molecule against the walls of a vessel Student activity Play

The force exerted by a single gas molecule against the walls of a vessel Animation Play

The force exerted by a single gas molecule against the walls of a vessel Simulation Play

The similarity between individuals of a single species Illustration Play

Using mean bond enthalpies in calculations Chart Play

Using mean bond enthalpies in calculations Chart Play

Using mean bond enthalpies in calculations. Part 1 Student activity Play

Using mean bond enthalpies in calculations. Part 2 Student activity Play