NEW MATH

Last week, I purchased a burger for $1.58. The counter girl
took my $2 and I was digging for my change when I pulled 8 cents
from my pocket and gave it to her. She stood there,
holding the nickel and 3 pennies, while looking at the
screen on her register. I sensed her discomfort and tried to
tell her to just give me two quarters, but she hailed the manager
for help. While he tried to explain the transaction to her, she
stood there and cried. Why do I tell you this?
Please read more about the "history of teaching math":

Teaching Math in 1960 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 1970 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 1980 A logger sells a truckload of lumber for $100. His cost of
production is $80. Did he make a profit?

Teaching Math in 1990 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 2000 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 2005
El hachero vende un camion carga por $100.
La cuesta de production es..........

And we wonder why jobs are being outsourced??