The law of refraction Student activity Play

The Law of Wave Reflection Student activity Play

The Law of Wave Reflection Animation Play

The Law of Wave Reflection Whiteboard exercise Play

The Law of Wave Refraction Student activity Play

The Law of Wave Refraction Animation Play

The Law of Wave Refraction Whiteboard exercise Play

The length of a laser Illustration Play

The mass of particles Illustration Play

The measurement of wavelength Animation Play

The mechanism of hearing Student activity Play

The mechanism of hearing Whiteboard exercise Play

The mechanism of hearing Animation Play

The more reliable source Whiteboard exercise Play

The nature of seismic waves Whiteboard exercise Play

The nature of seismic waves Chart Play

The nature of seismic waves Student activity Play

The operation of a cell Animation Play

The operation of a cell Student activity Play

The operation of a cell Whiteboard exercise Play

The origin and registration of seismic waves Whiteboard exercise Play

The origin and registration of seismic waves Student activity Play

The origins of seismic waves Slideshow Play

The oscillations of a string Animation Play

The oscillations of a string Student activity Play