#### Making Irrational Numbers Visible

A novel way of showing how root 2 can shown to be irrational, using a paper triangle.

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A story about a genie, a monkey, an ape and an infinite number of coconuts. Who gets the coconuts?

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How simple algebra can be used to investigate cubes and other polyhedra up to icosahedra.

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Harry gives an introduction to the difficulty of writing large numbers in Roman Numerals

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How simple algebra can be used to investigate cubes and other polyhedra up to icosahedra.

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#### All numbers are not equal

An introduction to the various types of numbers which are recognised as important.

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An approach to adding and subtracting fractions, using an understanding of the processes involved.

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How can we represent fractions in the simplest way? Equivalence of decimal and common fractions.

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Mutiplying and dividing fractions: a systematic approach to this perennial problem.

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Making life easy when using percentages. A sometimes fraught topic looked at differently.

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