Brackets and the negative sign Student activity Play

Calculator display Animation Play

Huygens' Principle Student activity Play

Huygens' principle Animation Play

Huygens' principle Whiteboard exercise Play

Nets of 3-D shapes Student activity Play

Nets of 3-D shapes Animation Play

Reflection of plane waves Animation Play

Reflection of plane waves Whiteboard exercise Play

Reflection of plane waves Student activity Play

Representations Whiteboard presentation Play

Representations Class activity Play

Rotation of the polarisation plane Student activity Play

Rotation of the polarisation plane Whiteboard exercise Play

The negative sign in front of the brackets Whiteboard exercise Play

Views of 3-D shapes Student activity Play