Subject: math test

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: Whats 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. cost of
production is $120. How does Arthur Andersen determine that his profit margin
is $60?

Teaching Math in 2010: El Loggero se habla with the truckero y se ponen e
acuerdo con otro driver de la competencia y etc