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Teaching Math in America

**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 loggers 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's 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 por $100.
El cuesto de la produccion es $80.
Cuantas tortillas se puede comprar?

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Volleyball Princessposted onTuesday, May 2, 2006