Bill introduces queueing theory and uses it to design the most efficient check out line
How simple algebra can be used to investigate cubes and other polyhedra up to icosahedra.
Harry gives an introduction to the difficulty of writing large numbers in Roman Numerals
A better way to extract square roots, with rapid convergence
A pen and pencil method of extracting square roots
Mutiplying and dividing fractions: a systematic approach to this perennial problem.
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.