FileTitle: Prose1163.html
Category: Humor
Type: Prose
Description: Teaching Math Through the Decades
 TEACHING MATH THROUGH THE DECADES

 In 1950: A logger sells a truckload of lumber for $100.  His cost of
 production is four-fifths of the price.  What is his profit?

 In 1960: A logger sells a truckload of lumber for $100.  His cost of
 production is four-fifths of the price, or $80.  What is his profit?

 In 1970 (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
 $1.00.  Make 100 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?

 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.

 In 1990: (outcome-based education):  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?)

 In 1996: By laying off 40% of its loggers, a company improves its stock
 price from $80 to $100.  How much capital gain per share does the CEO
 make by exercising his stock options at $80?  Assume capital gains are no
 longer taxed, because this encourages investment.