Math Forum Internet News

Volume 3, Number 12

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23 March 1998                                   Vol. 3, No. 12

                 THE MATH FORUM INTERNET NEWS
                 
Annenberg/CPB: Polls | Online Developer: Java | Car Talk Puzzler


             POLLS - WHAT DO THE NUMBERS TELL US?

         http://www.learner.org/exhibits/statistics/

         What is a random sample?
         What is a margin of error?

Enter this site by taking part in a survey; then follow a 
year in a fictitious election campaign for an inside look 
at the mathematics behind the polls and the statistics
affecting the political news you hear every day.

This exhibit explores well-known statistical concepts - 
random sampling, margin of error, and confidence - through 
activities where YOU play the pollster. Also included is a 
page of pointers to other Web sites related to statistics: 

http://www.learner.org/exhibits/statistics/resources.html

       The site is part of the Annenberg/CPB Projects 
       Exhibits Collection, and is inspired by the PBS 
       video Against All Odds.


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 ONLINE DEVELOPER'S REFERENCE LIBRARY: JAVA:EDUCATIONAL:MATH

http://www.developer.com/directories/pages/dir.java.educational.math.html

Java applets to investigate using a fast connection and a
Java-enabled browser. Math applets are listed for various
levels in the following categories:

  - Basics and Children's (19)
  - Fractals (37)
  - Games and Puzzles (19)
  - General (67)
  - Geometry (25)
  - Plotting, Graphing, and Drawing (67)
  - Tools (42)

Following are a few suggestions:

ARITM - Mikael Bonnier
http://www.df.lth.se/~mikaelb/aritm/aritm.shtml
  A Java applet for basic arithmetic drill (1- or 2-digit 
  terms) using digits, words, or Roman numerals. 

EXPLORE PATTERNS IN PASCAL'S TRIANGLE - Jeremy Baer
http://www.cs.washington.edu/homes/jbaer/classes/blaise/blaise.html
  Pascal's triangle offers many interesting number patterns 
  to explore with this applet.

THE GAME OF CHAOS - Juergen Giesen
http://mgw.dinet.de/physik/ChaosSpiel/ChaosEnglish.html 
  Does the Game of Chaos produce a random pattern of dots? 
  This applet performs the game at varying speeds.

THE PRISONER'S DILEMMA - Walter Korman
http://www.go2net.com/people/paulp/deep/1997/02/26/
  An overview of a classic game theory problem, with applets 
  that demonstrate different strategies of play. 

JAVASKETCHPAD - Nicholas Jackiw 
http://www.mathforum.org/dynamic/java_gsp/
  Applets made using dynamic geometry sketches created with 
  The Geometer's Sketchpad.

      From GAMELAN, The Official Directory for Java.
      For other interesting presentations, explore their
      searchable site. 

  http://www.developer.com/directories/pages/dir.java.html
  

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                     MAKING A PI NECKLACE

Diana Funke, Mathematics teacher at Davisville Middle School
in North Kingstown, RI, responded to our call for Pi Day
activities. See her suggestion at

http://mathforum.org/teachers/middle/activities/pi_day.html


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         THE CAR TALK PUZZLER - Tom and Ray Magliozzi

         http://cartalk.msn.com/Radio/puzz-intro.asp

Each week on their National Public Radio show, Car Talk,
Tom and Ray, a.k.a. Click & Clack, the Tappet Brothers,
present their listeners with a conundrum.

  "Sometimes it has to do with the inner workings of cars. 
   Sometimes it has to do with language, algebra, or 
   something else you should have learned in the seventh 
   grade... But more often than we'd like to admit, the 
   Puzzler has to do with more esoteric things like the 
   bubonic plague, electric trolleys in Brooklyn, or the 
   urgent need for a haircut." 

This site offers a weekly puzzle and links to archives 
of past puzzles where you'll find the names of winners and 
answers in text or audio versions of program transcripts. 
Here and there you'll find a straight math question, and 
there are math and logic problem-solving nuggets scattered 
throughout. Here are some of the more obviously math-related:

       Potato:
         http://cartalk.msn.com/Radio/pzans9626.html
       Prison Marbles:
         http://cartalk.msn.com/Radio/pzans9636.html
       Tom Hoofs it Home:
         http://cartalk.msn.com/Radio/pzans9649.html
       Low Tide:    
         http://cartalk.msn.com/Radio/pzans9707.html
       Behind Door Number One...     
         http://cartalk.msn.com/Radio/pzans9743.html
       Product Placement:
         http://cartalk.msn.com/Radio/pzans9802.html
       Frank's Party of Five:
         http://cartalk.msn.com/Radio/pzans9807.html


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