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? (There are no wrong
answers, and if you feel like crying, it's ok. )
6. Teaching Math In 2009
Un hachero vende una carretada de maderapara $100. El costo
de la producciones es $80. Cuanto dinero ha hecho?
