A battery and household mains Student activity Play

A battery and household mains Animation Play

A battery and household mains Whiteboard exercise Play

A car and a motorbike Animation Play

A diagram of a nuclear power station Illustration Play

A genealogical tree Animation Play

A grey body Animation Play

A grey body Student activity Play

A laser Student activity Play

A lens Whiteboard presentation Play

A lens Class activity Play

A magnifying glass Student activity Play

A magnifying glass Whiteboard exercise Play

A mirror and a light bulb Student activity Play

A mobile phone Slideshow Play

A negative exponent Whiteboard exercise Play

A number raised to the power of the reciprocal of  n Animation Play

A plant viroid Illustration Play

A plant viroid Illustration Play

A positive and a negative square root Whiteboard exercise Play

A power of a power Animation Play

A power of a power Whiteboard exercise Play

A power raised to powers Animation Play

A power supply Animation Play

A product of powers Whiteboard exercise Play