The equation of a circle with centre at the origin Student activity 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 motion for the body Whiteboard exercise Play

The equation of the circle Animation Play

The equation of the circle Student activity 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 Student activity Play

The equation of the tangent Whiteboard exercise Play

The equation of the tangent Animation Play

The equation of the tangent to a curve Whiteboard exercise Play

The equations and their solutions Whiteboard exercise Play

The equations with more than one solution Whiteboard exercise Play

The equations without a solution Whiteboard exercise Play

The equilateral triangle and the square Whiteboard exercise Play

The equilibrium constant Whiteboard exercise Play

The equilibrium constant Kp Student activity Play

The equilibrium for the decomposition of hydrogen iodide Animation Play

The force is at some angle to the direction of the movement Animation Play