The isosceles triangle Whiteboard exercise Play

The modulus and inequalities Animation Play

The perimeter of the rectangle Whiteboard exercise Play

The Professor's number Animation Play

The quadratic equations Animation Play

The quadratic formula Whiteboard presentation Play

The quadratic formula Class activity Play

The quickest method Animation Play

The simplest quadratic inequalities Student activity Play

The simplest quadratic inequalities Whiteboard exercise Play

The solution of the equation Whiteboard exercise Play

The solution of the equation Student activity Play

The solution set of a system of inequalities Student activity Play

The solution set of a system of inequalities Whiteboard exercise Play

The Superb Sandwich Company Animation Play

The tangent theorem – solving problems Whiteboard exercise Play

The unknown on both sides of the equation Whiteboard exercise Play

The unknown on both sides of the equation Student activity Play

The unknowns Whiteboard exercise Play

Think of a number Student activity Play

Think of a number Whiteboard exercise Play

Three simultaneous inequalities Animation Play

Time taken to get to school Animation Play

Transposing the formula Student activity Play

Two inequalities in a coordinate system Animation Play