中国的课堂上好像也没学过这个。作者: zdenny0001 时间: 2012-3-14 10:13
哈哈,今天我也翻译啦,贴上贴上!
-----------------------------------------------------------------
日语里山芋又别称为“十三里”,据称始于江户时代烘山芋的叫卖口号“九里四里美味十三里”(谐音“十三里比栗子更美味”)。也是托算盘和九九乘法口诀的福,日本人的生活中跟算术关系也比较密切。
也许也正因为如此,本人不才很喜欢数学,分数另当别论。不管是谁来解答数学问题,正确答案都是唯一的,明白方法后只管去解题便是。数学的这种坦率明白之美,深深吸引我,因此每次听到对现代学生数学能力的评价,都感到惆怅。
由数学老师们组成的日本数学学会,让48所大学的约6千名大学生,对难度从小学6年级至高中1年级的数学问题进行解答。答题学生中许多都是大一新生,要回答的数学问题对他们来说也并非年代久远的学习内容。然而本次试验的结果令人惆怅。
举其中一题来说,“为什么奇偶数之和必为奇数?”这应该是初中2年级的数学内容,能逻辑严密答题者仅为34%。有人答道:“因为我想得到的偶数加奇数后都是奇数”,诸如此类的艰难解答引人注目。另一题“描述一下二次函数的抛物线特征”,有答题者写的却是自己的感想“就是那个有点弯弯的东西”。
数学什么的对社会没啥贡献,如果这样想就太疏忽大意了。微积分固然很少用到,概率和集合之类的基本概念对商业事务非常重要。伪装成统计数据的信息篡改、数字上的花招,为了不被这些东西骗倒,我们也应该学好数学。
讨厌数学的各位,逻辑严密的思考习惯,应该会让我们的人生更为丰富多彩。今天是圆周率之日,重新思考一下,把数之苦当成数之乐如何?与数学搞好关系,今天开始未为晚哦。作者: senryo 时间: 2012-3-14 15:33
潔さ
打从学日语的那天起,这个词就一直折磨着我。作者: zdenny0001 时间: 2012-3-15 10:29
英文版:VOX POPULI: A sound knowledge of math can be a powerful weapon
---------------------------------------------------------------
"Jusanri" (literally, 13 "ri," an old style of measurement) is another name for sweet potato. (One ri is slightly less than 4 kilometers.) The word is said to derive from the sales pitch "Kuri yori umai jusanri" (Jusanri is tastier than kuri) used by vendors of baked sweet potatoes during the Edo Period (1603-1867). Kuri means chestnut in Japanese. It can also mean 9 ri, and yori can mean 4 ri. Hence the pun. Thanks to the abacus and multiplication tables, the Japanese have traditionally been fairly adept at arithmetic.
Whether for that reason or not, I, too, enjoyed mathematics--setting aside my scores. No matter who solves a problem, there is only ever one answer. Once we understand the logic, all we have to do is track down the answer.As one who was attracted to the beauty of such simplicity, I am saddened whenever I hear about falling standards in students' mathematical ability.
The Mathematical Society of Japan, which comprises of math teachers, devised a test for 6,000 students from 48 universities. They were asked to solve problems designed for children in sixth grade at elementary school all the way up to first-year senior high school students. Most of the students were freshmen. The questions tested their knowledge on what they had learned not so long ago. But the results were dismal.
Take, for example, the question: "When an even number is added to an odd number, why is the sum always an odd number?" They must have learned it when they were second-year junior high school students. But only 34 percent could give reasonably logical explanations. Many of the answers were less than passable. One student wrote: "Because the answer always turned out to be odd when I added even and odd numbers that came to mind." In answer to the question: "What are the characteristics of a parabola of quadratic functions?" some students just wrote down their impressions; for example, "Things that are sort of curvy."
Many people say the math taught at school is not useful after students have ventured out into the real world. They probably say this because it makes them feel better. It is true that we are rarely required to use calculus in real life. Even so, knowledge of probability and sets is very useful in the field of business.A sound background in math also helps us to defend ourselves from information manipulation under the guise of statistics and fraud that uses "number magic."
Readers who do not like math, please remember that the habit of logical thinking can enrich your life. Why not think again on March 14, "pi day," that it is wiser to make friends with math than remain enemies. It is never too late to make amends.
--The Asahi Shimbun, March 14作者: zdenny0001 时间: 2012-3-15 10:58
看了英文版才注意到,里在不同的国家距离并不相等,字典里的解释:
里(り)は、尺貫法における長さの単位である。現在の日本では約4km、中国では500m、朝鮮では約400mに相当する。
また勉強になりました。