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 1996:

By laying off 402 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.

Teaching Math in 1997:

A company outsources all of its loggers. They save on

benefits and when demand for their product is down the

logging work force can easily be cut back. The average

logger employed by the company earned $50,000, had 3

weeks vacation, received a nice retirement plan and

medical insurance. The contracted logger charges $50

an hour. Was outsourcing a good move?

Teaching Math in 1998:

A logging company exports its wood-finishing jobs to

its Indonesian subsidiary and lays off the

corresponding half of its US workers (the higher-paid

half). It clear-cuts 95% of the forest, leaving the

rest for the spotted owl, and lays off all its

remaining US workers. It tells the workers that the

spotted owl is responsible for the absence of fellable

trees and lobbies Congress for exemption from the

Endangered Species Act. Congress instead exempts the

company from all federal regulation. What is the

return on investment of the lobbying costs?