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This is a page from an early printed edition of the Arithmetica of Jordanus de Nemore (early 13th century).
Relationships between Architecture and Mathematics
A man hired a horse in London at 3 pence a mile. He rode 94 miles due West to Bristol then due north to Chester, whence he returned toward London for 66 miles, which put him in Coventry.
An oblong garden is a half yard longer than it is wide and consists entirely of a gravel walk...
A brief version of the author's well-known history of mathematics text.

A history of the concept of zero from as far back as the Babylonian period, with philosophical excursions into the meaning of "nothing".

The third part of a necklace of pearls, broken in a lover's quarrel, fell to the ground...
A description of a Research Experience for Undergraduates conducted in 2007 at Hood College.
NCTM Meeting in Philadelphia
Show that the curves x2 - y2 = a2 and 2 xy = b2 cross at right angles.