How simple algebra can be used to investigate cubes and other polyhedra up to icosahedra.
An introduction to the various types of numbers which are recognised as important.
How can we represent fractions in the simplest way? Equivalence of decimal and common fractions.
An approach to adding and subtracting fractions, using an understanding of the processes involved.
Mutiplying and dividing fractions: a systematic approach to this perennial problem.
'The amazing Mr Briggs' or 'Where do Logarithms come from?'
Harry gives an introduction to the difficulty of writing large numbers in Roman Numerals
Making life easy when using percentages. A sometimes fraught topic looked at differently.
Be wary of high interest rates! An introduction to how loans grow.
A pen and pencil method of extracting square roots
A better way to extract square roots, with rapid convergence
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