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. W hat 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
A logger
cuts down a beautiful forest because he is selfish and
inconsiderate and
cares nothing for the
habitat of animals or the preservation of our
woodlands. He does this so
he can make a profit of $20.
What do you th ink
of this way of making a living? Topic for class
participation after answering
the question:
How did the birds and squirrels feel as the logger cut down
their homes?
(There are no wrong answers.)
Teaching Math In 2008
Un
ranchero vende una carretera de madera para $100. El cuesto de la
produccion
era $80.
Cuantos tortillas se puede comprar?
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