1950's (Traditional Math):
A logger sells a truckload of lumber for $100.  His cost of production         
is 4/5 of this price.  What is his profit?

1960's (Applied Math):
A logger sells a truckload of lumber for $100.  His cost of production
is 4/5 of this price; in other words, $80.  What is his profit?
 

1970's (New Math):
A logger exchanges a set L of lumber for a set M of money.  The
cardinality of set M is 100, and each element is worth $1.  Make one
hundred dots representing the elements of the set M.  The set C of the
costs of production contains 20 fewer points than set M.  Represent
the set C as a subset of M, and answer the following question:  What
is the cardinality of the set P of profits?

1970's (Welfare Math):
A logger sells a truckload of wood for $100.  His cost of production
is $80 and his profit is $20.  Underline the word "wood" and you will
be paid that $20.

1980's (Republican Math):
A Fortune 500 timber maintenance corporation sells a truckload of wood  
for $100.  The cost of production is $20 because the trees were taken
from public land.  The profit of $80 has been applied to legal costs
associated with suits filed by the Sierra Club.  What tax incentives
can be provided to the Corporation to help stimulate the economy.

1990's (Outcome Based Education Math):
By cutting down beautiful forest trees, a logger makes $20. What do
you think of this way of making a living?  Topic for class
participation: How did the forest birds and squirrels feel?

1990's (Information Superhighway Math):
A logger sells a truckload of wood for $100.  His cost of production
is $80 and his profit is $20.  Access the Internet to answer the
following questions.  How does the logger's profitability compare with
that of the 10 largest logging companies in the Northern Hemisphere?
Based on 1988-1993 trends in newspaper recycling, will decreased
demands for paper-grade timber affect his profitability.  How much are
new environmental regulations expected to decrease his profits.
Download everything in the Library of Congress on logging.  How long
would this download take if you had been using a 14,400 baud modem
instead of a T1 line?