A microscopic image Student activity Play

A microscopic image Whiteboard exercise Play

A microwave oven Animation Play

A mirror Whiteboard exercise Play

A mirror Animation Play

A mirror Student activity Play

A mirror and a light bulb Animation Play

A mirror and a light bulb Student activity Play

A mirror and a light bulb Whiteboard exercise Play

A mirror and a light bulb Simulation Play

A mobile phone Slideshow Play

A mobile source and a mobile observer Student activity Play

A mobile source and a mobile observer Animation Play

A mobile source and a mobile observer Simulation Play

A mobile source and a mobile observer Whiteboard exercise Play

A mobile source and a stationary observer Student activity Play

A mobile source and a stationary observer Simulation Play

A mobile source and a stationary observer Whiteboard exercise Play

A model electric motor Slideshow Play

A model of the distorted space around the Sun Illustration Play

A molecule emitting a quantum of radiation Whiteboard exercise Play

A motionless solid Simulation Play

A motionless solid Whiteboard exercise Play

A motionless solid Student activity Play

A moveable pulley Student activity Play