A sphere Animation Play

Applying proportion Student activity Play

Archimedes' contemplation Animation Play

Calculating surface area Animation Play

Critical mass Whiteboard exercise Play

Critical mass Student activity Play

Critical mass Simulation Play

Definition of the metre Animation Play

Deriving the formula for the surface area of a sphere Animation Play

Equipotential surfaces in a field due to a point charge Whiteboard exercise Play

Equipotential surfaces in a field due to a point charge Student activity Play

Equipotential surfaces in a field due to a point charge Simulation Play

Equipotential surfaces in a field due to a point charge Animation Play

Estimation of the volume Animation Play

Examples of 3-D shapes Student activity Play

Examples of 3-D shapes Animation Play

Finding the volume of a sphere Animation Play

Galaxies, clusters and nebulae Student activity Play

Galaxies, clusters and nebulae Illustration Play

GPS system Animation Play

Huygens' principle Whiteboard exercise Play

Huygens' Principle Student activity Play

Measures of length Student activity Play

Miscellaneous exercises Student activity Play

Modern atomic model Student activity Play