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This is the title page of the Nova Scientia (1537) of Niccolo Tartaglia (1499-1557). In this work, Tartaglia discussed the mathematics of artillery and developed methods for determining the range of a cannon.
Given a door and a measuring rod of unknown dimensions, the rod is used to measure the door.
A speculator bought stock at 25% below par and sold it at 20% above par. He gained $1560. How much did he invest?
A set of four posters dealing with the Pythagorean Theorem, infinity, prime numbers, and the history of pi.
A reprint of the 32nd yearbook of the NCTM, dealing with developments in mathematics education in the U.S. and Canada. In particular, it gives a history of the various reform movements up to the publication date of 1980.
A fish sees a heron looking at him from across a pool, so he quickly swims towards the south. When he reaches the south side of the pool, he has the unwelcome surprise of meeting the heron.
A square walled city of unknown dimensions has four gates, one at the center of each side.
A sketch of the history of topology, beginning with the polyhedron formula, but continuing up to the present.
A wide-ranging site with links to many sources in the history of mathematics.
If 80 dollars worth of provisions will serve 20 men for 25 days, what number of men will the same amount of provisions serve for 10 days?