Teaching in 2007

[Hitman]

1. Teaching Math In 1950s
A logger sells a truckload of lumber for $100. His cost of production is 4/5 of the price.
What is his profit?


2. Teaching Math In 1960s
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?


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


4. Teaching Math In 1980s
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.


5. Teaching Math In 1990s
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?


6. Teaching Math In 2007
Un hachero vende una carretada de maderapara $100. El costo de la produccio n es es $80. Cuanto dinero ha
hecho?