> start by undoing a lot of what they had
previously been taught, such as
> that PI was EXACTLY 22/7 ! (half a century ago, in elementary school, I
> got into "big trouble" for telling a teacher that PI was NOT 22/7 !)
On Sun, 16 Oct 2011, Jonas Otter wrote:
Aarrghh!! Is that what they teach in American
schools?? That is *evil*.
Yes.
Although, admittedly, that was half a century ago (PI does NOT change!
(or DOES IT??)), and fifth grade of an elementary school.
My mother once had a teacher who when his pupils were
bad, told them to
behave, otherwise he would teach them wrong. In his opinion that was the
worst punishment he could think of.
That's one of the excuses that I used when my students would spot a
misteak thatI had made!
I am absoutely sure that over here everybody is
taught, and always has
been, the difference between natural, real, rational and irrational
numbers, and that pi is an irrational number which can be approximated
by 22/7.
I got that on my own, some in 7th grade, and reasonably adequate in 11th
grade.
The Swedish school system may have very serious
problems, but hearing
this kind of thing makes me very, very grateful that my kids haven't
grown up in the USA.
I wasn't given much choice. My parents told me to behave, and to learn
how to handle situations where people with power over me were wrong.
I guess that I learned PART of that - I have never defenestrated a college
administrator!
--
Grumpy Ol' Fred