A positive and a negative square root Whiteboard exercise Play

A pump Animation Play

A rational function Student activity Play

A special case of the inverse function Animation Play

A water wheel Student activity Play

Absolute value of a function Student activity Play

Absolute value of a function Whiteboard exercise Play

Absolute value of a number, modulus function Student activity Play

Absolute value of the argument of a function Animation Play

Absolute values of entropy Student activity Play

Absolute values of entropy Whiteboard exercise Play

Add integers Whiteboard exercise Play

Add integers Student activity Play

Adding and subtracting positive decimals Student activity Play

Adding and subtracting positive decimals Whiteboard exercise Play

Addition of integers Student activity Play

Addition of integers Whiteboard exercise Play

Algebraic construction of an inverse function Student activity Play

Algebraic construction of an inverse function Whiteboard exercise Play

Algebraic solution Animation Play

Altering the  y-scale and the  x-scale Whiteboard exercise Play

Altering the  y-scale and the  x-scale Student activity Play

Aluminium chloride Animation Play

An electrically neutral body Animation Play

An electron-proton pair Animation Play