<p>This is a Powerpoint Presentarion on the real numbers system.<br /> It defines each type of numbers giving examples with an Venn Diagram.</p>

<p>This is a presentation introducing direct and indirect proportion.<br /> Learning objectives:<br /> Define the term proportion.<br /> Identify proportions.<br /> Differentiate between direct and indirect proportion.<br /> Solve problems that are directly or indirectly proportional.</p>

<p>This presentation introduces the three basic trigonometric functions: sine, cosine and tangent.</p>

<p>This presentation will assist in understanding angles of depression and how to use angle properties and Trigonometry to solve problems relating to angles of depression.</p>