The National Grid system Animation Play

The origin of spectral lines Animation Play

The path of a charge moving perpendicular to the filed lines Animation Play

The scalar product (1) Whiteboard presentation Play

The shape of the field lines Animation Play

The shape of the magnetic field Animation Play

The spectral lines in the atomic spectrum of hydrogen Animation Play

The velocity of a charge moving along the filed lines Animation Play

Transformer Class activity Play

Transformer Class activity Play

Transformer Whiteboard presentation Play

Transformer Whiteboard presentation Play

Transformers and transmission lines Slideshow Play

Transformers and transmission lines Whiteboard exercise Play

Transformers and transmission lines Student activity Play

Two conductors Animation Play

Two magnets Animation Play

Two parallel symmetry lines Animation Play

Two perpendicular symmetry lines Animation Play

Two reflections in two parallel mirror lines Whiteboard exercise Play

Two reflections in two perpendicular mirror lines Whiteboard exercise Play

Various number lines Animation Play

Vector equations of lines in 2-D Class activity Play

Vector equations of lines in 2-D Whiteboard presentation Play

Vector equations of lines in 3-D Class activity Play