A film played backwards Animation Play

A line parallel to a given line Student activity Play

A line parallel to a given line Whiteboard exercise Play

Absolute values of entropy Student activity Play

Addition, subtraction and division Animation Play

Addition, subtraction and multiplication Animation Play

Breaking of the world records Whiteboard exercise Play

Changing fractions to decimals Whiteboard exercise Play

Classification of the sweet pea Whiteboard exercise Play

Colour order in a spectrum Whiteboard exercise Play

Combined events Student activity Play

Commutativity of like terms addition Student activity Play

Commutativity of like terms addition Student activity Play

Commutativity of like terms addition Animation Play

Compose a proof Student activity Play

Compose a proof Whiteboard exercise Play

Demonstration of the formula for the area of a triangle Whiteboard exercise Play

Demonstration or proof? Student activity Play

Division before addition and subtraction Whiteboard exercise Play

Division before addition and subtraction Student activity Play

Effect of concentration on the reaction rate. Graphical methods Whiteboard presentation Play

Effect of concentration on the reaction rate. Graphical methods Class activity Play

Effectiveness Whiteboard exercise Play

Elimination the extreme values Animation Play

Entropy Student activity Play