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arithmetic
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A page from a first-grade workbook typical of “new math” might state: “Draw connecting lines from triangles in the first set to triangles in the second set. Are the two sets equivalent in number?”
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arithmetic summary
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Italian-born physicist Dr. Enrico Fermi draws a diagram at a blackboard with mathematical equations. circa 1950.
Define It: Math Terms
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A page from a first-grade workbook typical of “new math” might state: “Draw connecting lines from triangles in the first set to triangles in the second set. Are the two sets equivalent in number?”
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Key People

al-Karajī
Persian mathematician and engineer
John Vincent Atanasoff
American mathematician and physicist
William Petty, detail of a portrait attributed to Isaac Fuller, c. 1649-51; in the National Portrait Gallery, London
Sir William Petty
English political economist
Nicomachus of Gerasa
Nicomachus of Gerasa
Roman philosopher and mathematician
Bahāʾ ad-dīn Muḥammad ibn Ḥusayn al-ʿĀmilī
Iranian scholar
Cocker, portrait by an unknown artist based on an engraving by Richard Gaywood; in the National Portrait Gallery, London
Edward Cocker
English mathematician

Related Quizzes and Features

Quiz
Italian-born physicist Dr. Enrico Fermi draws a diagram at a blackboard with mathematical equations. circa 1950.
Define It: Math Terms