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Convergence articles

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A circle is inscribed in an isosceles trapezoid. Find the relationship of the radius to the sides.
A number is required; that the square shall be equal to twice the cube.
A five-volume set of biographies of mathematicians from ancient times to the twentieth century, aimed at secondary students.

[Translation of title: Algebra in the Time of Babylon. When Mathematics Were Written on Clay.] A thorough review of Jens Hoyrup's revision, expansion, and French translation of his own 1998 book for Danish high-school students.

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.
The Tree of Proportions and Proportionality from the De Divina Proportione of Luca Pacioli published in 1509.
In a square box that contains 1000 marbles, how many will it take to reach across the bottom of the box in a straight row?
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.
A fellow said that when he counted his nuts by twos, threes, fours, fives and sixes, there was still one left over; but when he counted them by sevens they came out even. How many did he have?
This meeting of the Canadian Society for the History and Philosophy of Mathematics takes place in Vancouver, BC, in association with the 2008 Canadian Congress of the Humanities and Social Sciences

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