My Mom was a Math Teacher.  Kathy





--- "Cleveland, Kyle E."
<[log in to unmask]> wrote:
>                 Teaching Math Through the Years
> (in the U.S., at least...)
>
>                 Teaching Math in 1950: A logger
> sells a truckload of lumber
> for $100.  His cost of production is 4/5 of the
> price. What is his profit?
>
>                 Teaching Math in 1960: A logger
> sells a truckload of lumber
> for $100.  His cost of production is 4/5 of the
> price, or $80. What is his
> profit?
>
>                 Teaching Math in 1970: A logger
> exchanges a set "L" of
> lumber for a set "M" of money.  The cardinality
> of set "M" is 100.  Each
> element is worth one dollar.  Make 100 dots
> representing the elements of the
> set "M."  The set "C", the cost of production,
> contains 20 fewer points than
> set "M."  Represent the set "C" as a subset of
> set "M" and answer the
> following question: What is the cardinality of
> the set "P" of profits?
>
>                 Teaching Math in 1980: A logger
> sells a truckload of lumber
> for $100.  His cost of production is $80 and
> his profit is $20. Your
> assignment: Underline the number 20.
>
>                 Teaching Math in 1990: By
> cutting down beautiful forest
> trees, the logger makes $20.  What do you think
> of this way of making a
> living?  Topic for class participation after
> answering the question: How did
> the forest birds and squirrels feel as the
> logger cut down the trees?  There
> are no wrong answers.
>
>                 Teaching Math in 2000: A logger
> sells a truckload of lumber
> for $100.  His cost of production is $120.  How
> does Arthur Andersen
> determine that his profit margin is $60?
>
>                 Teaching Math in 2010: El
> hachero vende un camion carga por
> $100.  La
>                 > > cuesta de producion es...


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