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 sells a truckload of lumber for $100. His cost of production
is $80. Did he make a profit?
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
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 think 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 2005
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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