Volume 33 - Issue 3 - May 2001

Mathematical Spectrum Click image to download issue

A Family of Heron Triangles
   K. R. S. Sastry
   pp. 49-52

Tiling with Penrose Rhomb Clusters
   Ellen Perstein
   pp. 53-56

Spreading a Virus Among Intravenous Drug Users
   Joe Gani
   pp. 57-58

Mathematics in the classroom
   What's New in DERIVE™ 5?
   P. Schofield
   pp. 59-62

Computer Column
   pp. 63-64

Letter to the Editor: A problem about rational numbers
   Bob Bertuello
   p. 64

Letter to the Editor: A Tale of Two Series-A Dickens of an Integral
   A. G. Summers
   p. 65

Letter to the Editor: A series expansion of 1/π
   Milton M. Chowdhury
   p. 65

Letter to the Editor: Spiralling to a limit
   Farshid Arjomandi
   Merlin Ellis
   p. 65

Problems and Solutions
   pp. 66-68

Book review: Zero: the Biography of a Dangerous Idea
   by C. Seife (Souvenier Press Ltd, 2000)
   Daniel Lamy
   p. 69

Book review: Introducing Mechanics by B. Jefferson,
   T. Beadsworth (Oxford University Press, 2000)
   Edward Bateman
   p. 69

Book review: The Math Chat Book by F. Morgan
   (MAA, 2000)
   Chung Chung Tang
   pp. 69-70

Other books received:
   Using History to Teach Mathematics 
   Edited by V. Katz (MAA, 2000)
   Geometry at Work: Papers in Applied Geometry  
   Edited by C. A. Gorini (MAA, 2000) 
   p. 70

Index to Volumes 31 - 33
   pp. 70-71