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Convergence articles

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Whimsical posters of fifteen mathematicians with brief biographies.
There are two numbers which are to each other as 5 and 6 and the sum of their squares is 2196. What are the numbers?
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Short sketches on how mathematicians work and think.
Image of first arithmetic book published in the English colonies in what is now the Eastern United States
Given four integers where if added together three at a time their sums are: 20, 22, 24, and 27. What are the integers?
A collection of illustrations of Inca quipus, with references to their earliest descriptions.
A square circumscribed about a given circle is double in area to a square inscribed in the same circle. True of false? Prove your answer.
Historical Problems can be used to enliven any mathematics class. Here are some examples from medieval times, from a 19th century American textbook, and from a 19th century Armenian textbook, among other sources.
I have two fields of grain. From the first field I harvest 2/3 a bushel of grain/unit area; from the second, 1/2 bushel/unit area.