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

Relationships between Architecture and Mathematics
A mouse is at the top of a poplar tree 60 braccia high, and a cat is on the ground at its foot. The mouse decends 1/2 a braccia a day and at night it turns back 1/6 of a braccia.
NCTM Meeting in Philadelphia
An oblong garden is a half yard longer than it is wide and consists entirely of a gravel walk...
A woodcutter starts to fell a tree 4 feet in diameter, and cuts half way through. One face of the cut is horizontal, and the other face is inclined to the horizontal at an angle of 45 degrees. Find the volume of the wood cut out.
Instructions that apply to Convergence but not necessarily to other areas of Loci
This a wonderfully written tour of aspects of classical geometry-- a must read for all geometry teachers.
Show that the curves x2 - y2 = a2 and 2 xy = b2 cross at right angles.
We sadly announce the untimely death of one of Convergence's editorial board members.

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Dummy View - NOT TO BE DELETED