According to History Today, William Jones created pi in 1706. This mathematics teacher used the symbol to refer to the constant ratio of any circle's circumference to its diameter. More » Math Calculus

Pi Day is a nationally recognized date celebrating mathematics and the history of the mathematical term pi. Pi Day is observed and celebrated in many fun ways worldwide. More » Holidays & Celebrations Holidays

Some Pi Day activities for high school students include discussing the history of pi, measuring various circular objects, writing pi poems and holding a pi digit memorization contest. Other possible activities include go... More » Holidays & Celebrations Holidays
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A mathematics teacher named William Jones is credited with first using the symbol π in 1706 to represent the concept of the ratio between a circle's circumference and diameter. It had previously been ill-defined. More » History Inventions

The phrase "pi r squared" refers to the mathematical formula used to determine the area of a circle. Normally, the equation is written as "pi * r2," or "Π * r2. More » Math Calculus

A person can consider a differential equation by determining an initial condition, as a differential equation is an equation that gives the derivative of an unknown function in terms of the function and the independent v... More » Math Calculus

Leonard Euler largerly contributed to the field of mathematics by proving existing theorems, finding the solutions to complex problems, introducing mathematical symbols and formulating theorems and equations that bear hi... More » Math Calculus