I watched half of it, and am now having so much trouble finding words to express my astonishment, that I'll just leave it to Matthew:
I love The 74 -- they (generally) do an outstanding job, with news and opinion worth reading. I read all of it every day and point people to their perspective whenever I can.You can say that again.
However, the appropriate academic term for this Math 2.0 video series is "absolute horseshit."
In the first minutes of "Math 2.0," we learn that "Common Core math" teaches children to subitize.
"Subitizing" means you see 3 pennies and immediately know you have 3 pennies. You don't have to count.
Subitizing, as it happens, is an innate ability. Chimpanzees can subitize, too; in fact, chimps do it better than humans. They can subitize up to the number 6. We stop at 5.
I'm pretty sure I remember that all creatures can do it, but I'm not going to spend 15 minutes Googling "Can goldfish subitize" to find out.
Another thing: I'm having a hard time believing that formal instruction in subitizing is part of the Common Core, but I'm not going to Google that, either.