The mean number of children in a family Whiteboard exercise Play

The modal value Whiteboard exercise Play

The modal value Student activity Play

The modal value and the median Student activity Play

The mode in a grouped variable Student activity Play

The most frequently observed data Animation Play

The mysterious box Animation Play

The nth term expression Whiteboard exercise Play

The number π Whiteboard exercise Play

The number π and the formula for the circumference of a circle Student activity Play

The period of the tangent Whiteboard exercise Play

The period of the tangent Student activity Play

The periods of the sine and the cosine Student activity Play

The population mean Animation Play

The price of land Animation Play

The Pythagorean identity Whiteboard exercise Play

The quadratic function with one parameter and a constant value Simulation Play

The quadratic function with one parameter and a constant value Whiteboard exercise Play

The ratio of three values Animation Play

The ratio of three values Student activity Play

The ratio of three values – balls in the boxes Whiteboard exercise Play

The ratio of two values Animation Play

The ratio of two values Student activity Play

The ratio of two values – more difficult problems Student activity Play

The relationship between equilibrium constants of pressure and concentration Animation Play