The Professor's number Animation Play

The quadratic equations Animation Play

The quadratic formula Class activity Play

The quadratic formula Whiteboard presentation Play

The quickest method Animation Play

The solution of the equation Whiteboard exercise Play

The solution of the equation Student activity 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

Transposing the formula Student activity Play

Using graphs (1) Whiteboard presentation Play

Using graphs (1) Class activity Play

Using the factor form of the function in solving geometric problems Whiteboard exercise Play

Washing powder: Snow White Whiteboard exercise Play

Writing and solving the equation Student activity Play

Yoko's and Lena's number Whiteboard exercise Play

Yoko's number Whiteboard exercise Play