The derivative of a linear function Simulation Play

The electron microscope Student activity Play

The eye and the ear Whiteboard presentation Play

The eye and the ear Class activity Play

The focal length and the shape of a lens Animation Play

The functions  y = a(x – p)2 Student activity Play

The functions  y = ax 2 + q Student activity Play

The functions  y = ax 2 Student activity Play

The general form of a quadratic function Student activity Play

The general form of a quadratic function Simulation Play

The mechanism of vision Student activity Play

The number of roots of a quadratic equation Student activity Play

The number of roots of a quadratic equation with parameter Whiteboard exercise Play

The number of roots of a quadratic equation with parameter – example Animation Play

The number of roots of a quadratic equation – example Animation Play

The parameters of binoculars Slideshow Play

The power of a lens Animation Play

The power of lenses Student activity Play

The power of lenses Whiteboard exercise Play

The quadratic function with one parameter Whiteboard exercise Play

The quadratic function with one parameter Simulation Play

The quadratic function with one parameter and a constant value Simulation Play

The quadratic function with one parameter and a constant value Whiteboard exercise Play

The structure of a lens Student activity Play

The structure of a lens Animation Play