b*****2
发帖数: 11103 | 1 【 以下文字转载自 USANews 讨论区 】
发信人: beijingren (to thine own self be true), 信区: USANews
标 题: 从一到数学题看美国的终衰 (转载)
发信站: BBS 未名空间站 (Tue May 17 12:23:44 2016, 美东)
发信人: beijingren (to thine own self be true), 信区: Military
标 题: 从一到数学题看美国的终衰
发信站: BBS 未名空间站 (Tue May 17 12:23:17 2016, 美东)
Follow the deterioration of our culture and educational system for the 63
Years from 1957-2020
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 2000s
If you have special needs or just feel you need assistance because of
race, color, religion, sex, age, childhood memories, criminal background,
then don't answer and the correct answer will be provided for you.
There are no wrong answers.
7. Teaching Math in 2020
Un hachero vende una carrtada de madera para 100 pesos. El costo de la
producciones es 80 pesos. Cuanto dinero ha hecho?
| g*q
发帖数: 26623 | 2 这个版本更好
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 exchanges a set, "L", of lumber for a set, "M", of money.
The cardinality of set "M" is 100. Each element is worth one dollar.
Make 100 dots representing the elements of the set "M."
The set "C", the cost of production contains 20 fewer points than set "M"
Represent the set "C" as a subset of set "M" and answer the following
question: What is the cardinality of the set "P" of profits?
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 is to - Write and underline the number "20".
Teaching Math in 1990:
~~~~~~~~~~~~~~~~~~
By cutting down beautiful trees and desecrating the precious forest a logger
makes $20.
What do you think of this way of making a living?
Topic for class participation after answering the question:
How did the forest birds and squirrels feel as the logger cut down the trees
? - There are no wrong answers.
Teaching Math in 2000:
~~~~~~~~~~~~~~~~~~~
A logger sells a truckload of lumber for $100.
His cost of production is $120.
How does an Enron Accountant determine that his profit margin is $275?
Teaching Math in 2010 (in California):
~~~~~~~~~~~~~~~~~~
"El hachero vende un camion cargapor 100,000 pesos.
La cuestade production es... " | H********g
发帖数: 43926 | | z*********n
发帖数: 94654 | 4 属实，100 － 80 ＝ 20 是最简单的一种做法
【在 H********g 的大作中提到】
: 其实越来越难
| H********g
发帖数: 43926 | 5 70年代发生了什么？
【在 g*q 的大作中提到】
: 这个版本更好
: 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.
| r*g
发帖数: 3159 | 6 受苏联刺激，搞高大上的新数学运动。
【在 H********g 的大作中提到】
: 70年代发生了什么？
|
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