Math Forum Internet News

Volume 8, Number 4

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27 January 2003                                 Vol. 8, No. 4

                  THE MATH FORUM INTERNET NEWS

Fermi Math League | In Search of the Missing...e | Space Day 2003
     New Dr. Math FAQ: Divisibility Tests to 50 and Beyond


        FERMI OFF-THE-WALL MATH LEAGUE, YEAR 3, SESSION 2
           Minnesota Intermediate School District 287

      http://www.int287.k12.mn.us/gifted/fermileague.html

  Year 3, Session 2 will start February 10, 2003, and will run
  for six weeks. To submit solutions online, register with an
  entry fee of $25 per person per session. An individual, a
  pair or a team of four may register for this Internet-based
  project.

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                  IN SEARCH OF THE MISSING...e

 http://www.ngsc.k12.in.us/tickit/in_search_of_the_missing.htm

  Jeanne Winters from Princeton Community High School has
  designed a WebQuest to use with her students that is a
  review and investigation of the natural exponential
  function.

  Using the resource links provided, students must design an
  "e" problem/solution related to architecture, medicine, 
  economics, or pharmacology. Each problem should be a
  mathematical function or formula using the number "e."

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                        SPACE DAY 2003
               CELEBRATING THE FUTURE OF FLIGHT

                     http://spaceday.com

  As the nation prepares to commemorate the Centennial of
  Flight in the coming year, Space Day 2003 -- "Celebrating the
  Future of Flight" -- will honor the past 100 years of aviation
  and aerospace accomplishments while seeking to inspire the
  next generation of inventors, innovators, aviators, and
  dreamers.

  On May 1, 2003, teachers, students and space enthusiasts
  around the world can participate in Cyber Space Day, an
  interactive Webcast entirely devoted to science, space, and
  mathematics.

  The Teacher's Space includes links to these areas:

      - Cyber Space Day
      - Design Challenges
      - Essential Teachers' Links
      - Lesson Library
      - Signatures in Space
      - Space Day Discussion Board
      - Space Day in Your Neighborhood
      - Teacher's Quotes
      - This Week in Space

  Teacher's Space
        http://spaceday.com/en/teachers/index.php

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                      New Ask Dr. Math FAQ
              DIVISIBILITY TESTS TO 50 AND BEYOND
                   by Stephen D. T. Froggatt
           Oaks Park High School, Ilford, Essex, UK

   http://mathforum.org/dr.math/faq/faq.divisibleto50.html

  Froggatt explains how the idea of deleting the last digit
  and adding or subtracting a multiple of the digit from the
  remaining number can be generalized to test for divisibility
  by prime numbers up to 53 and beyond.

  More information on divisibility rules:

    Ask Dr. Math: FAQ Divisibility Rules
    http://mathforum.org/dr.math/faq/faq.divisibility.html

    Calculation Tips & Tricks: Divisibility Rules
    http://mathforum.org/k12/mathtips/division.tips.html

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