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Convergence articles

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Benjamin Banneker's Inscribed Equilateral Triangle

An interesting problem from Banneker's notebook as well as other problems to use with students.

Jacob Kobel's Geometry
This is the title page of the geometry book of Jacob Kobel (1460 - 1533). The book dealt primarily with measurement, showing its readers how to use various instruments to measure fields, determine heights of buildings, and perform various other necessary tasks.
Multicultural Classroom Posters Sets 1 & 2
Posters illustrating mathematics concepts in such places as China, Japan, India, and the Americas.
HPM Newsletter
The latest HPM Newsletter is now available here. Read it!
An Imaginary Tale: The Story of √-1
The author became fascinated with the mysterious role of √-1 in electronics. Turning to history for insight, he brings the perspectives of both a practical man and a scholar in conveying the enchantment of mathematics for a non-mathematician.
Enrichment: The Use of Original Sources
A report on an Australian teacher's use of material from the Rhind Papyrus.
John Napier: His Life, His Logs, and His Bones

A brief introduction to the life of John Napier, along with an animation of calculations using Napier's bones.

Maya Cycles of Time

History of Maya calendars, including the modified base 20 number system used in them.

Leonardo of Pisa: Bunny Rabbits to Bull Markets

The Fibonacci numbers and applications to areas such as plant growth and stock market predictions.

Frans van Schooten's Exercitationes mathematicae
This is page 167 from the Exercitationes mathematicae (1657) of Frans van Schooten (1615-1660). This book contained a collection of mathematical construction problems, among much else. It was one of the books read by Isaac Newton while he was a student at Cambridge University and helped to introduce him to modern mathematics. On this page we see a construction enabling one to find the distance across a river.

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