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        MATH TOOLS NEWSLETTER - JANUARY 1, 2005 - No. 22

  Happy New Year! We got a jump start on one of our new year's
  resolutions -- re-solving the problem some of you had when
  attempting to post to the discussions. To those of you who
  experienced a "hanging" browser that made it seem as though
  your post hadn't gone through, we thank you for your patience
  and are happy to report that we have resolved the problem.

  We are hoping that the new year brings many interesting
  discussions to Math Tools. Feel free to start a new discussion
  of your choice or join one of them already in progress.

  Midsegment of a rectangle?
  Cynthia asks, "I remember having discussions with mathematicians
  that trapezoids should include the family of parallelograms.
  Do you agree? Then should it also include the family of triangles?"

  Upper middle schoolers that haven't yet mastered multiplication facts
  Bethy writes, "We have a number of students who, at 7th and
  8th grade, still don't know 75% or more of the multiplication
  facts. What does the research indicate? Does anyone know of an
  effective method for equipping these students with a procedure
  so that they can move ahead?"

  Tool: Colouring Sides 1
  Freudenthal Institute
  This tool presents a 3-d drawing along with four 2-d views.
  Choose the one 2-d figure that corresponds to the colored face
  on the 3-d figure. These exercises in spatial visualization
  become more challenging with each new set of drawings.

  Tool: Zap it Game
  Commercial site with one free access per day. Students are
  given a set of points and are asked to "zap" as many points
  as possible. They can use either polynomial form or vertex form.
  Students can get a line by setting "a" equal to 0. New points
  can be displayed and then the student can try again.

  Tool: Poisson Experiment
  Department of Mathematical Sciences
  University of Alabama at Huntsville
  This applet allows the user to fix a rate and time interval
  for a Poisson process (counting the number of occurrences in
  a fixed time interval). Experimental and theoretical results,
  including expected value and standard deviation, are shown.

  Tool: Addition Surprise
  Harcourt School Publishers
  Students practice addition facts by dragging the given numbers
  onto the Fact Table to a box where the row and column add up
  to the given number. A free preview activity from Harcourt
  School Publishers.

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             The Math Forum @ Drexel -- 1 January 2005