The enlargement of the triangle Animation Play

The equilateral triangle Student activity Play

The equilateral triangle and the square Whiteboard exercise Play

The focal length and the shape of a lens Animation Play

The focal point of a concave mirror Whiteboard exercise Play

The focal point of a concave mirror Student activity Play

The focal point of a concave mirror Animation Play

The formation of an image by a spherical mirror Student activity Play

The formation of an image by a spherical mirror Simulation Play

The formation of an image by a spherical mirror Whiteboard exercise Play

The formula for the area of a triangle Animation Play

The formula for the space diagonal of a cube Student activity Play

The formula for the space diagonal of a cube Whiteboard exercise Play

The frequency of free oscillation Whiteboard exercise Play

The frequency of free oscillation Student activity Play

The frequency of oscillation of strings Slideshow Play

The greyhound and the hare Animation Play

The hair loss gene Slideshow Play

The handrail along stairs Whiteboard exercise Play

The height of the equilateral triangle Whiteboard exercise Play

The importance of mineral ions Student activity Play

The isosceles triangle Whiteboard exercise Play

The length of a curve Student activity Play

The length of a curve Animation Play

The length of a curve – a satellite circles the Earth Whiteboard exercise Play