Defining half-planes Whiteboard exercise Play

Defining half-planes – a simple case Student activity Play

Defining points on the plane using vectors Animation Play

Depletion of the ozone layer Slideshow Play

Describing position in a plane Whiteboard exercise Play

Describing regions on the plane using inequalities Whiteboard exercise Play

Devices that use microwaves Slideshow Play

Different angles Student activity Play

Diffraction Slideshow Play

Diffraction Chart Play

Diffraction Student activity Play

Diffraction Whiteboard exercise Play

Diffraction and interference Whiteboard presentation Play

Diffraction and interference Whiteboard presentation Play

Diffraction and interference Class activity Play

Diffraction and interference Class activity Play

Diffraction and interference of mechanical waves Class activity Play

Diffraction and interference of mechanical waves Whiteboard presentation Play

Diffraction and interference of mechanical waves Class activity Play

Diffraction and interference of mechanical waves Whiteboard presentation Play

Diffraction grating Whiteboard exercise Play

Diffraction grating Student activity Play

Diffraction grating Animation Play

Diffraction grating constant Illustration Play

Diffraction of electrons – the Davisson-Germer experiment Student activity Play