How math lessons have changed through the years.

1. The teaching of mathematics in 1950

A logger sells a truckload of lumber for $ 100. His cost of production is 4 / 5 the price. What is its purpose?

2. The teaching of mathematics in 1960

A logger sells a truckload of lumber for $ 100. His cost of production is 4 / 5 the price, or $ 80 What is its purpose?

3. Teaching Math in 1970

A logger sells a truckload of lumber for $ 100. Its production cost is $ 80. Is there a profit?

4. The teaching of mathematics in 1980

A logger sells a truckload of lumber for $ 100. Its production cost is $ 80 and his profit is $ 20. Their mission: Underline the number 20.

5. Teaching Math in 1990

A woodcutter kills a beautiful forest because he is selfish and inconsiderate and do not care about the habitat of animals or the preservation of our forests. He does this so you can get a profit of $ 20. What do you think of this way of living? Issue of class participation after answering the question: How birds and squirrels feel as the logger cut their homes? (There are no wrong answers.)

6. The teaching of mathematics in 2007

A hachero come una carretada the maderapara $ 100. El costo es de producción of $ 80.

On the first day of college, the Dean addressed the students:
"The female dormitory is out-of-bounds for all male students, and the male dormitory to the female students. Anybody caught breaking this rule will be fined $20 the first time. The second time you will be fined $60. A third time will cost you a fine of $180. Are there any questions?"
A male student inquired, "How much for a season pass?"

Three college professors were driving down the highway at a very slow speed. A policeman pulled them over and explained that driving so slowly on the highway could be hazardous. The driver pointed out the sign that read "20." He explained that he was going 20 mph because of the sign. The policeman pointed out that the sign indicated they were driving on Highway 20.
Somewhat embarrassed the professor apologized and promised to be more observant.
As the policeman was walking back to his car, he saw the other two professors on the floor in the back seat...looking scared to death! He asked the driver, "What's wrong with them?"
The driver replied, "We just turned off Highway 166."

Teacher to a student: "Can you think of a solution to end unemployment?"
"Yes, sir! I'd put all the men on one island and the women on another."
"And what would they be doing then?"
"Building boats!"

Early one morning, a mother went in to wake up her son. "Wake up, son. It's time to go to school!"
"But why, Mom? I don't want to go."
"Give me two reasons why you don't want to go."
"Well, the kids hate me for one, and the teachers hate me, too!"
"Oh, that's no reason not to go to school. Come on now and get ready."
"Give me two reasons why I should go to school."
"Well, for one, you're 52 years old. And for another, you're the Principal!"