A plane mirror Animation Play

A prism Student activity Play

A refracting telescope Student activity Play

A refracting telescope Animation Play

A spoon in a glass of water Animation Play

A square root Student activity Play

A virtual image in a mirror Animation Play

Acidity reaction (hydrolysis) of metal ions Student activity Play

Adding natural numbers using the written method Student activity Play

Adjusting sharpness Student activity Play

Adjusting sharpness Whiteboard exercise Play

Adjusting sharpness Simulation Play

Algebraic expressions Student activity Play

An image formed by a concave mirror Animation Play

An image formed by a converging lens Animation Play

An image formed by a magnifying glass Animation Play

An image in a mirror Simulation Play

An image in a mirror Student activity Play

An image in a mirror Simulation Play

An image through a camera Animation Play

An object brought closer to the focal point Animation Play

An object brought closer to the mirror Animation Play

Analysis of photographs Slideshow Play

Angle bisector Student activity Play

Angle sum of a polygon Student activity Play