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Cartesian Coordinate Plane Invented by René Descartes
The Cartesian coordinate plane was first seen in Descartes' La Géométrie in 1637. It is said that Descartes came up with the idea after laying in bed and seeing a fly on the ceiling. He notices that he could represent the fly's location on the ceiling by using two numbers, x and y, to indicate the fly's position on the ceiling. -
Leibniz invents Calculus
Credited along with Sir Isaac Newton, Gottfried Wilhelm Leibniz invented Calculus. -
Graphing Calculator Invented
Casio Japan invented the graphing calculator, the Casio FX-7000, in 1985. The lead engineer on the Casio 7000 development team was Hideshi Fukaya. -
Diophantus of Alexandria
Sometimes called the "Father of Algebra." Diophantus lived in Alexandria, Egypt and made great strides toward understanding Algebra. -
Muhammad ibn Mūsā al-Khwārizmī
Muhammad ibn Mūsā al-Khwārizmī (c. 780–850) wrote The Compendious Book on Calculation by Completion and Balancing, which established algebra as a mathematical discipline that is independent of geometry and arithmetic.
