1 February 1999 Vol. 4, No. 5
THE MATH FORUM INTERNET NEWS
Math in Daily Life  Visual Math  Huang  Venn Diagrams  Ruskey
MATH IN DAILY LIFE
Annenberg CPB Projects Exhibit Collection
http://www.learner.org/exhibits/dailymath/
Students often question how they will use basic mathematical
concepts, algebra, and geometry throughout their lives.
This interactive exhibit features articles about how math
affects daily decisionmaking. Contents include:
 Playing to Win: probability, casinos, and the lottery
 Savings and Credit: calculating interest and managing
a credit card
 Population Growth: exponential growth and effective
display of data in charts and graphs
 Home Decorating: figuring area, with a page on Pi
 Cooking by Numbers: ratio and proportion, with
information on the metric system
 The Universal Language: math as a language shared by
all human beings regardless of culture, religion, or
gender
and a page of links to related math resources on the Web.
Math in Daily Life is inspired by programs from For All
Practical Purposes, a video series in the Annenberg/CPB
Multimedia Collection.
http://www.learner.org/collections/multimedia/mathematics/faseries/
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VISUAL MATH FOR JAVA, SYMBMATH  Dr. Weiguang Huang
http://www.bigfoot.com/~showing/
Visual Math is a Java Applet that serves as a graphic
calculator, equationsolver, and more. Users can input a
function into the f(x) field, calculate it by clicking on
the "=" button, solve it using the "solve" button, and
plot it with another button. On graphs, you can find
coordinates by clicking, input the initial value of x, and
zoom in or out.
SymbMath is a symbolic calculator and computer algebra
system that can perform exact numeric, symbolic and graphic
computation. It manipulates complicated formulas and returns
answers in terms of symbols, formulas, exact numbers, tables,
and graphs. It runs on PCs under MSDOS and requires only
400 KB free memory.
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A SURVEY OF VENN DIAGRAMS  Frank Ruskey
http://sue.csc.uvic.ca/~cos/venn/
A collection of various facts and figures about Venn diagrams,
particularly as they relate to combinatorial properties of
the diagrams. The site is a working version of a survey that
appeared in Vol. 5(1), 1998 of the Electronic Journal of
Combinatorics.
http://www.combinatorics.org/Volume_5/v5i1toc.html
Site organization:
 Who was John Venn?
 What is a Venn diagram?
formal definition of Venn diagrams
general constructions of Venn diagrams
 graphs associated with Venn diagrams
the planar dual of a Venn diagram
how many Venn diagrams are there?
extending Venn diagrams
minimum vertex Venn diagrams
 symmetric Venn diagrams
symmetric diagrams for small n
Venn diagrams and Gray codes
 other variants of Venn diagrams
 open problems
with references, acknowledgements, and footnotes.
This site is associated with the (Combinatorial) Object
Server (COS), from the Department of Computer Science at
the University of Vancouver, British Columbia, Canada.
http://sue.csc.uvic.ca/
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