Changes in Math Education throughout the decades
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 2000: 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.