search  current discussion  categories  safety - health 

fw: teaching math

updated tue 10 sep 02

 

Philip Poburka on mon 9 sep 02


A friend send me this...as there are many Teachers on our
list, I thought I would forward it...

Phil
Las Vegas




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?

Teaching Math in 2010: El hachero vende un camion carga por
$100. La
cuesta de production es..........