The New Math/Perspective

[relaxnsmoke]

How teaching math has changed.

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?

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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?

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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
subset of set "M" and answer the following question:
What is the cardinality of the set "P" of profits?

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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.

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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.

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Teaching Math in 2002:
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?

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Teaching Math in 2010:
Un maderero vende una carga del carro de la madera de
construcción para $100.
El coste de producción es.......

If you'd like to forward this on to anyone else, please send me $12.95. rns

[MADURO_MAS_DURO]

Originally posted by relaxnsmoke
How teaching math has changed.
Teaching Math in 2010:
Un maderero vende una carga del carro de la madera de
construcción para $100.
El coste de producción es.......

If you'd like to forward this on to anyone else, please send me $12.95. rns

Ju espeaking espanglich meng...No comprende...