The distribution of the rational numbers over the number line Animation Play

The domain of the trigonometric functions Animation Play

The ellipse Student activity Play

The ellipse Animation Play

The equation describing the line Whiteboard exercise Play

The equation of a horizontal line Animation Play

The equation of a line going through two points Whiteboard exercise Play

The equation of a line going through two points Student activity Play

The equation of a normal Whiteboard exercise Play

The equation of a tangent to a circle Whiteboard exercise Play

The equation of a tangent to a circle Student activity Play

The equation of a vertical line Animation Play

The equation of the circle with centre at an arbitrary point Whiteboard exercise Play

The equation of the line Whiteboard exercise Play

The equation of the tangent Animation Play

The equation of the tangent Student activity Play

The equation of the tangent Whiteboard exercise Play

The equation of the tangent to a curve Whiteboard exercise Play

The family of lines Student activity Play

The family of lines Whiteboard exercise Play

The family of lines y = 2x + c Animation Play

The figure and its symmetry Whiteboard exercise Play

The first tangent theorem Animation Play

The first tangent theorem – perpendicularity Student activity Play

The first tangent theorem – perpendicularity Whiteboard exercise Play