Time needed to wash potatoes Whiteboard exercise Play

Total combustion in the laboratory Animation Play

Transformation of an equation into a quadratic equation Whiteboard exercise Play

Transformation of an equation into a quadratic equation Student activity Play

Transforming the equation of the circle Whiteboard exercise Play

Transforming the equation of the circle Whiteboard exercise Play

Transforming the vector equation of a line Animation Play

Transposing the formula Student activity Play

Trigonometric equations Whiteboard exercise Play

Trigonometric equations Student activity Play

Trigonometric equations (1) Whiteboard presentation Play

Trigonometric equations (1) Class activity Play

Trigonometric equations (2) Whiteboard presentation Play

Trigonometric equations (2) Class activity Play

Two flares Animation Play

Two parallel tangents to a circle Whiteboard exercise Play

Types of air pollution Slideshow Play

Types of equations Whiteboard exercise Play

Typical problems with quadratic equations Student activity Play

Typical problems with quadratic equations Whiteboard exercise Play

Unit vectors in a vector equation of a line Animation Play

Units of the equilibrium constant Whiteboard exercise Play

Units of the equilibrium constant Kc Student activity Play

Use of intersection points Student activity Play

Use of intersection points Whiteboard exercise Play