Last week I purchased a burger at Burger King for $1.58. The counter girl took my $2 and I was digging for my change when I pulled 8 cents from my pocket and gave it to her. She stood there, holding the nickel and 3 pennies, while looking at the screen on her register. Why can't she figure this out? Because of the evolution in teaching math since the 1950s: 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 ************************ El hachero vende un camion carga por $100. La cuesta de production es.....
