A mathematical aid which represents relationships between numbers in a physical form so as to provide assistance in teaching or learning mathematic concepts. The mathematical aid comprises a series of symbols (A) each representing a number in a mathematically ordered sequence. The relationship between the numbers is represented by physical properties and each symbol has the physical properties relevant to the number it represents. In this way, the relationships between the numbers in the sequence can be determined by examination of the physical properties of the symbols representing the numbers. The physical properties may include shape colouring and surface texture applied to the symbols. The symbols may be of a three-dimensional form such as beads (A) strung together on string B. Alternatively the symbols may be of a two-dimensional form such as pictorial symbols on a chart.
