The height and fluency of speech Animation Play

The letters in algebraic expressions, formulas, equations and functions Whiteboard exercise Play

The letters in algebraic expressions, formulas, equations and functions Student activity Play

The mode in a grouped variable Student activity Play

The mode in a grouped variable Whiteboard exercise Play

The newspapers Animation Play

The resistance of a light bulb filament Student activity Play

The resistance of a light bulb filament Simulation Play

The result of a random experiment Student activity Play

The result of a random experiment Whiteboard exercise Play

The scatter plot for bird density Student activity Play

The scatter plot for forest density Student activity Play

The scatter plot for forest density Whiteboard exercise Play

The scatter plot for forest height Student activity Play

The scatter plot for forest height Whiteboard exercise Play

The specified variable the subject of the equation Whiteboard exercise Play

The three-digit number Whiteboard exercise Play

The trachea – a tube of variable diameter Student activity Play

The trachea – a tube of variable diameter Whiteboard exercise Play

The value of an expression Simulation Play

The value of an expression Student activity Play

The value of an expression Whiteboard exercise Play

The value of the expression Whiteboard exercise Play

The winners of the prizes Whiteboard exercise Play

Three factors affecting population size Illustration Play