Robert Berkman, a veteran math teacher, writes a blog called “Better Living Through Mathematics, where he regularly skewers nonsense.

In this article, he looks closely at a chart that purportedly demonstrates how pathetic is the performance of U.S. adults, compared to many other nations.

Berkman says this may be the “stupidest article about Common Core math program” that he has ever read.

To begin with, the graph does not identify the highest possible score, making it impossible to draw conclusions or comparisons. So one conclusion from the graph, Berkman says, is: “whatever sample of US adults took this test did 88% as well as the adults in the top scoring nation, Japan. I think that’s pretty damned good, considering the United States is second to the world in poverty, leaving Japan in the dust by over 10 percentage points (and I’m sure Japan uses a much higher economic benchmark for poverty than we do here in the US.) Of course, we all know that poverty is the single greatest predictor of poor school performance.”

[Note to Robert Berkman: that “second in the world in poverty” is nonsense, despite the authoritative source. It is a comparison not of all nations, but of the most economically developed nations, and the U.S. is supposedly second to Romania. This is an absurd comparison because Romania doesn’t belong in this group of nations. Romania is an Eastern European nation whose economy was mismanaged and impiverished by central planning for decades. Oh, well, I may never get this error corrected, but I keep trying. The fact is that we have the highest level of child poverty of any advanced nation in the world.]

After pointing out other errors, Berkman writes:

“Finally, this article is yet another example of the “waking up on third base” phenomena, which posits that everything that you see in a Common Core math curriculum is the direct result of the implementation of the Standards. Nothing could be further from the truth: all of the items described on in the article have been documented, published and taught since the NCTM published its curriculum standards a quarter of a century ago. If you’ve been teaching math using a textbook that was published in the last 20 years, you’ve probably seen all this stuff before including, with all deference to Mr. Colbert, the infamous description of a “number sentence.” Telegram for Mr. Colbert: 1989 is writing to tell you to “LOL!”

He notes with dismay that “NCTM actually tweeted the link to this worthless piece of codswallum, and smelling something rotten, I just had to follow the scent.”