 Over the years, math-wise ... | |
Teaching Math
1. Teaching Math In 1950's
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 1960's
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 1970's
A logger sells a truckload of lumber for $100. His cost of production is
$80. Did he make a profit?
4. Teaching Math In 1980's
A logger sells a truckload of lumber for $100. Her cost of production is $80
and her profit is $20. Your assignment: Underline the number 20.
5. Teaching Math In 1990's
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 2007
Un hachero vende una carretada de madera para $100. El costo de la
producciones es $80. Cuanto dinero ha hecho? 
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