Description of motion in terms of vectors Whiteboard presentation Play

Description of motion in terms of vectors Class activity Play

Designing experiments Student activity Play

Discrete and continuous variables Animation Play

Discrete variables Slideshow Play

Distance Animation Play

Dot plot Student activity Play

Dot plot – earthquakes in Switzeland Simulation Play

Dot plot – graphical representation of variables Whiteboard exercise Play

'Double quadratic' equations Student activity Play

Drawing a card Whiteboard exercise Play

Drawing marbles Student activity Play

Drawing marbles Whiteboard exercise Play

Employment lay-offs Student activity Play

Encoding numbers Student activity Play

Equations in two variables Whiteboard exercise Play

Equations in two variables Student activity Play

Equations with one variable Student activity Play

Equations with one variable Whiteboard exercise Play

Equations with separable variables Class activity Play

Equations with separable variables Whiteboard presentation Play

Equations with  cos(ax) Student activity Play

Example of introducing a new variable Animation Play

Example of mutually exclusive events Animation Play

Example of solving a system of linear equations by substitution Animation Play