Prove geometrically that the hypocycloid is a straight line when the radius of the rolling circle is one-half the radius of the fixed circle.

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Fibonacci gave a practical rule for approximating the area of an equilateral triangle.

Given the frustum of a circular cone with height h.

Thumbnail sketches of statisticians throughout history.

Review of Bertram's text on the history of Greek science.

What it took to get an 8th grade education in 1895

Two pages from a 1650 manuscript of the Lilavati of Bhaskara II (1114-1185). The second photo is an illustration of the Pythagorean Theorem.

A California miner has a spherical ball of gold, 2 inches in diamter, which he wants to exchange for spherical balls 1 inch in diameter. How many of the smaller spheres should he receive?

A biography stressing Agnesi's deep commitment to help those in need.

The Fundamental Theorem of Calculus is presented in the version of Scottish mathematician James Gregory -- without the use of limits.