Solving exercises using the normal to a circle Student activity Play

Solving problems using the tangent theorem Student activity Play

Solving problems using the tangent theorem Simulation Play

Solving quadratic inequalities using a graph Whiteboard exercise Play

Solving the inequalities using the test-point method Student activity Play

Solving trigonometric equations using the tangent function Whiteboard exercise Play

Square a of difference Student activity Play

Structure determination using proton NMR spectroscopy: an example Animation Play

Subtracting decimals using the written method Whiteboard exercise Play

Subtracting decimals using the written method Student activity Play

Subtracting natural numbers using the written method Student activity Play

Subtracting using the written method Animation Play

Subtracting using the written method Animation Play

Symmetry in a circle Student activity Play

The dangers of using inorganic fertilizers Slideshow Play

The distance between the centres of circles Student activity Play

The examples of using the trapezium rule Animation Play

The first tangent theorem – perpendicularity Student activity Play

The formula for the space diagonal of a cube Student activity Play

The reasons for using circles Animation Play

The standard index form on the calculator display Student activity Play

Triangles Student activity Play

Using a bisection method Whiteboard exercise Play

Using a bisection method Student activity Play

Using a burette Student activity Play