How We Can Assist Children's Learning in and through Art. It is quite appropriate to assist children's learning in and through art and to ensure that children are equipped with the skills and techniques to enable them to express their own ideas better than they might do on their own.
The symbol used by mathematicians to represent the ratio of a circle's circumference to its diameter is the lowercase Greek letter Ï, sometimes spelled out as pi, and derived from the first letter of the Greek word perimetros, meaning circumference. In English, Ï is pronounced as pie ( /paÉª/, paÉª).
Pi is the 16th letter of the Greek alphabet, but it is best known as the symbol used to name a mathematical relationship: the ratio between the circumference of a circle and its diameter. As such, it is a mathematical constant and has many uses.