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Patterns, Functions, and Algebra
 
Glossary

Channel Talk

From: Marilyn J. Parker (parker@interact.ccsd.net)
Date: Wed Jun 19 2002 - 15:15:19 EDT

  • Next message: WBS: "[Channel-talkalgebra] Difficulty viewing session 4"

    I think you could play with the words in this problem and have it be
    considered either.

    Let's say that I ask you which car gets the BEST mileage. The fact that
    you are comparing how many miles each car can go on a set amount of gas
    (in this case one gallon) makes me think of this as an absolute
    comparison. There is only one variable. . .the miles. The gallons are
    fixed.

    Compare this to the "Which class has the MOST girls in it?" question.
    There are two variables when you start to deal with the relative
    comparison. You take into account the number of girls and the number of
    students.

    If you asked me which car got the BEST mileage depending on its size
    (measured in volume or weight), then I would say you had a relative
    comparison going on.

    Just some thoughts.
    Marilyn

    Kimberly K. Loomis writes:
    >Team,
    >This question can across my desk. It seems that Las Vegas is not the only
    >group taking Algebra this summer. Maybe you might like to respond.
    >
    >QUESTION:
    >We are taking the Patterns, Functions and Algebra class by video tape and
    >have a question about possible solutions to Session 4 problem A4. The
    >topic
    >is absolute versus relative comparison. One suggested example of
    >absolute
    >was to compare the mles per gallon ratings of various new cars. For
    >example
    >22 mpg versus 25 mpg. Since this is a "per gallon" comparison, some
    >class
    >members think this is a relative comparison ( 22/1 and 25/1). Which
    >would be
    >correct?
    >
    >Melinda Guthrie
    >School District 51
    >Grand Junction, Colorado
    >meligut@yahoo.com

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