Reflection of a wave Animation Play

Refracting telescope Animation Play

Refracting telescope Student activity Play

Refraction of light Student activity Play

Refraction of plane waves Simulation Play

Refraction of plane waves Student activity Play

Resonance Student activity Play

Resonance Student activity Play

Resonance Animation Play

Satellite television Student activity Play

Satellite television Slideshow Play

Seeing Student activity Play

Seismic waves Class activity Play

Seismic waves Whiteboard presentation Play

Seismic waves Animation Play

Seismic waves Student activity Play

Seismic waves and the inside of the Earth Student activity Play

Seismic waves and the inside of the Earth Whiteboard exercise Play

Sensation; perception and activation thresholds Student activity Play

Sensation; perception and activation thresholds Slideshow Play

Sensing the world – receptors Student activity Play

Sensory organs Class activity Play

Sensory organs Whiteboard presentation Play

Sight defects Student activity Play

Sight defects Simulation Play