A lamp Animation Play

A lamp Whiteboard exercise Play

A large amount of water in the organism Animation Play

A laser Student activity Play

A laser Whiteboard exercise Play

A lead cube Animation Play

A lens Class activity Play

A lens Whiteboard presentation Play

A Lewis dot-and-cross diagram of a fluorine molecule Animation Play

A Lewis dot-and-cross diagram of a hydrogen chloride molecule Animation Play

A light nanosecond Animation Play

A lighthouse Student activity Play

A lighthouse Whiteboard exercise Play

A line parallel to a given line Student activity Play

A line parallel to a given line Whiteboard exercise Play

A linear function in the argument Student activity Play

A linear function in the argument Whiteboard exercise Play

A liquid exerts pressure in a different way from a solid Student activity Play

A liquid exerts pressure in a different way from a solid Whiteboard exercise Play

A magnetic needle in the vicinity of a conductor Student activity Play

A magnetic needle in the vicinity of a conductor Whiteboard exercise Play

A magnifying glass Student activity Play

A magnifying glass Simulation Play

A magnifying glass Whiteboard exercise Play

A map of the sky Whiteboard exercise Play

A mass spectrometer Illustration Play

A matchstick proof Animation Play

A mercury barometer Animation Play

A metal ball Animation Play

A microwave oven Animation Play