Common Core 就像没有经过妥善的 A/B 测试或灰度发布（canarying），就被强行推上了 prod 生产环境。20 世纪 60 年代对“新数学”（New Math）的所有批评，放在今天它身上同样完全适用。去 archive.org 看看 Morris Kline 写的《为什么约翰尼算不出数来》（Why Johnny Can't Add）就明白了。
Common core was rammed through to prod without proper a/b testing or canarying. All the criticisms of the "New Math" of the 1960s are just as applicable to it today. See Morris Kline's «Why Johnny Can't Add» on archive.org.
……的发展以及为了便于教学而进行的标准化，与最初的发现者得出结果的过程混为一谈。这两者截然不同。摘自 https://en.wikipedia.org/wiki/New_Math ：Morris Kline 在他的《Why Johnny Can't Add: The Failure of the New Math》一书中指出，这些新课题的某些提倡者“完全忽视了数学是一个渐进积累的过程，几乎不可能……
…development and a standardization for ease of teaching, with the Original Discoverer's process of arriving at his results. They are very different. From https://en.wikipedia.org/wiki/New_Math : In his book, Why Johnny Can't Add: The Failure of the New Math, Morris Kline says that certain advocates of the new topics "ignored completely the fact that mathematics is a cumulative development and that it is practically impossible…
……我儿子的经历算是倒霉的那一面。然而这种戏码我们以前早就见过了。我刚才针对 Common Core 说的所有话，在 50 年前针对“新数学”也完全能说一遍。结果就搞出了《为什么约翰尼算不出数来》（Why Johnny Can't Add）以及“回归基础”运动。想打个赌看看 Common Core 会不会重蹈覆辙吗？所以我预测我们的教育系统根本摸索不出如何正确推行 Common Core。……
…My son's experience being on the bad side. However we have seen this picture before. Everything that I just said about Common Core could have been said 50 years ago about New Math. The result was Why Johnny Can't Add, and the "Back to Basics" movement. Want to bet on whether something like this happens again with Common Core? And so I predict that our educational system won't figure out how to do Common Core right.…
……推动了下一轮改革浪潮，然后他们又能从中捞一笔。我母亲在 20 世纪 50 年代成了学校老师，而在那时这个循环就已经在运转了。（想想看，人造卫星发射引发了“新数学”，进而引出了《Why Johnny Can't Add》，诸如此类。）换用现有的教材来采取一套切实可行的方法，对教育体制来说将是一场灾难。所以我们绝不会这么做。无论我们的常规……有多么丢人
…motivates the NEXT reform wave, which they then also profit on. My mother became a school teacher in the 1950s, and this cycle was ALREADY in progress back then. (Think Sputnik leads to New Math leads to Why Johnny Can't Add, etc.) Switching to already existing books for an approach that actually will work would be a disaster for the education establishment. And so we'll never do it. No matter how embarrassing our regular…
以前就有人搞过这套（去查查 New Math 就知道），而且根本行不通（参见《Why Johnny Can't Add》）。你可以在大量关于数学教育的文献中找到这些接二连三流行的所谓理论依据。我个人的看法是，它之所以行不通，是因为你需要一定的分析成熟度……
It's been done (look up New Math) and it didn't work (see Why Johnny Can't Add). You can find the rationales for the successive fashions in the abundant literature of mathematics education. Personally my take is that it doesn't work because you need certain analytical maturity…
四大力量：1) 像《Why Johnny Can't Read》（1955）和《Why Johnny Can't Add》（1973）这样的书，2) 情绪智力（情商），就像 Goleman 提出的那样，3) 孩子们建立新的社交结构，比 Postman 的《创造世界者》（World Makers）更进一步，4) 允许孩子们按不同步调学习。我认为那些……
Four forces: 1) Books like "Why Johnny Can't Read" (1955) and "Why Johnny Can't Add" (1973), 2) emotional intelligence, like in Goleman, 3) kids creating new social structures, a little further than Postman World Makers, 4) letting kids learn at different paces. I think the people…
Common Core 就像没有经过妥善的 A/B 测试或灰度发布（canarying），就被强行推上了 prod 生产环境。20 世纪 60 年代对“新数学”（New Math）的所有批评，放在今天它身上同样完全适用。去 archive.org 看看 Morris Kline 写的《为什么约翰尼算不出数来》（Why Johnny Can't Add）就明白了。
Common core was rammed through to prod without proper a/b testing or canarying. All the criticisms of the "New Math" of the 1960s are just as applicable to it today. See Morris Kline's «Why Johnny Can't Add» on archive.org.
……的发展以及为了便于教学而进行的标准化，与最初的发现者得出结果的过程混为一谈。这两者截然不同。摘自 https://en.wikipedia.org/wiki/New_Math ：Morris Kline 在他的《Why Johnny Can't Add: The Failure of the New Math》一书中指出，这些新课题的某些提倡者“完全忽视了数学是一个渐进积累的过程，几乎不可能……
…development and a standardization for ease of teaching, with the Original Discoverer's process of arriving at his results. They are very different. From https://en.wikipedia.org/wiki/New_Math : In his book, Why Johnny Can't Add: The Failure of the New Math, Morris Kline says that certain advocates of the new topics "ignored completely the fact that mathematics is a cumulative development and that it is practically impossible…
……我儿子的经历算是倒霉的那一面。然而这种戏码我们以前早就见过了。我刚才针对 Common Core 说的所有话，在 50 年前针对“新数学”也完全能说一遍。结果就搞出了《为什么约翰尼算不出数来》（Why Johnny Can't Add）以及“回归基础”运动。想打个赌看看 Common Core 会不会重蹈覆辙吗？所以我预测我们的教育系统根本摸索不出如何正确推行 Common Core。……
…My son's experience being on the bad side. However we have seen this picture before. Everything that I just said about Common Core could have been said 50 years ago about New Math. The result was Why Johnny Can't Add, and the "Back to Basics" movement. Want to bet on whether something like this happens again with Common Core? And so I predict that our educational system won't figure out how to do Common Core right.…
……推动了下一轮改革浪潮，然后他们又能从中捞一笔。我母亲在 20 世纪 50 年代成了学校老师，而在那时这个循环就已经在运转了。（想想看，人造卫星发射引发了“新数学”，进而引出了《Why Johnny Can't Add》，诸如此类。）换用现有的教材来采取一套切实可行的方法，对教育体制来说将是一场灾难。所以我们绝不会这么做。无论我们的常规……有多么丢人
…motivates the NEXT reform wave, which they then also profit on. My mother became a school teacher in the 1950s, and this cycle was ALREADY in progress back then. (Think Sputnik leads to New Math leads to Why Johnny Can't Add, etc.) Switching to already existing books for an approach that actually will work would be a disaster for the education establishment. And so we'll never do it. No matter how embarrassing our regular…
以前就有人搞过这套（去查查 New Math 就知道），而且根本行不通（参见《Why Johnny Can't Add》）。你可以在大量关于数学教育的文献中找到这些接二连三流行的所谓理论依据。我个人的看法是，它之所以行不通，是因为你需要一定的分析成熟度……
It's been done (look up New Math) and it didn't work (see Why Johnny Can't Add). You can find the rationales for the successive fashions in the abundant literature of mathematics education. Personally my take is that it doesn't work because you need certain analytical maturity…
四大力量：1) 像《Why Johnny Can't Read》（1955）和《Why Johnny Can't Add》（1973）这样的书，2) 情绪智力（情商），就像 Goleman 提出的那样，3) 孩子们建立新的社交结构，比 Postman 的《创造世界者》（World Makers）更进一步，4) 允许孩子们按不同步调学习。我认为那些……
Four forces: 1) Books like "Why Johnny Can't Read" (1955) and "Why Johnny Can't Add" (1973), 2) emotional intelligence, like in Goleman, 3) kids creating new social structures, a little further than Postman World Makers, 4) letting kids learn at different paces. I think the people…