Aberration Animation Play

Accommodation Animation Play

Adjusting sharpness Student activity Play

Adjusting sharpness Simulation Play

Altering the x-scale Simulation Play

Altering the x-scale of the graph Simulation Play

Altering the x-scale – preliminary Student activity Play

Altering the x-scale – summary Student activity Play

Altering the y-scale of the graph Simulation Play

Altering the y-scale – summary Student activity Play

An image formed by a converging lens Animation Play

An image formed by a magnifying glass Animation Play

An image through a camera Animation Play

Arms of a parabola Simulation Play

Arms up and down Student activity Play

Astigmatism Animation Play

Binoculars Whiteboard exercise Play

Binoculars Student activity Play

Binoculars Whiteboard exercise Play

Binoculars Student activity Play

Characteristic rays Animation Play

Converging and diverging lenses Student activity Play

Converging lens Animation Play

Converging lens, f < x < 2f Simulation Play

Converging lens, f < x < 2f Whiteboard exercise Play